81241020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:241

約数の個数: 216

約数和(自身を含む): 293293728

約数和(自身を除く): 212052708

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 61, 63, 70, 84, 90, 98, 105, 122, 126, 140, 147, 151, 180, 183, 196, 210, 244, 245, 252, 294, 302, 305, 315, 366, 420, 427, 441, 453, 490, 549, 588, 604, 610, 630, 732, 735, 755, 854, 882, 906, 915, 980, 1057, 1098, 1220, 1260, 1281, 1359, 1470, 1510, 1708, 1764, 1812, 1830, 2114, 2135, 2196, 2205, 2265, 2562, 2718, 2745, 2940, 2989, 3020, 3171, 3660, 3843, 4228, 4270, 4410, 4530, 5124, 5285, 5436, 5490, 5978, 6342, 6405, 6795, 7399, 7686, 8540, 8820, 8967, 9060, 9211, 9513, 10570, 10980, 11956, 12684, 12810, 13590, 14798, 14945, 15372, 15855, 17934, 18422, 19026, 19215, 21140, 22197, 25620, 26901, 27180, 27633, 29596, 29890, 31710, 35868, 36844, 36995, 38052, 38430, 44394, 44835, 46055, 47565, 53802, 55266, 59780, 63420, 64477, 66591, 73990, 76860, 82899, 88788, 89670, 92110, 95130, 107604, 110532, 110985, 128954, 133182, 134505, 138165, 147980, 165798, 179340, 184220, 190260, 193431, 221970, 257908, 266364, 269010, 276330, 322385, 331596, 332955, 386862, 414495, 443940, 451339, 538020, 552660, 580293, 644770, 665910, 773724, 828990, 902678, 967155, 1160586, 1289540, 1331820, 1354017, 1657980, 1805356, 1934310, 2256695, 2321172, 2708034, 2901465, 3868620, 4062051, 4513390, 5416068, 5802930, 6770085, 8124102, 9026780, 11605860, 13540170, 16248204, 20310255, 27080340, 40620510, 81241020]

約数ペア:

[(1, 81241020), (2, 40620510), (3, 27080340), (4, 20310255), (5, 16248204), (6, 13540170), (7, 11605860), (9, 9026780), (10, 8124102), (12, 6770085), (14, 5802930), (15, 5416068), (18, 4513390), (20, 4062051), (21, 3868620), (28, 2901465), (30, 2708034), (35, 2321172), (36, 2256695), (42, 1934310), (45, 1805356), (49, 1657980), (60, 1354017), (61, 1331820), (63, 1289540), (70, 1160586), (84, 967155), (90, 902678), (98, 828990), (105, 773724), (122, 665910), (126, 644770), (140, 580293), (147, 552660), (151, 538020), (180, 451339), (183, 443940), (196, 414495), (210, 386862), (244, 332955), (245, 331596), (252, 322385), (294, 276330), (302, 269010), (305, 266364), (315, 257908), (366, 221970), (420, 193431), (427, 190260), (441, 184220), (453, 179340), (490, 165798), (549, 147980), (588, 138165), (604, 134505), (610, 133182), (630, 128954), (732, 110985), (735, 110532), (755, 107604), (854, 95130), (882, 92110), (906, 89670), (915, 88788), (980, 82899), (1057, 76860), (1098, 73990), (1220, 66591), (1260, 64477), (1281, 63420), (1359, 59780), (1470, 55266), (1510, 53802), (1708, 47565), (1764, 46055), (1812, 44835), (1830, 44394), (2114, 38430), (2135, 38052), (2196, 36995), (2205, 36844), (2265, 35868), (2562, 31710), (2718, 29890), (2745, 29596), (2940, 27633), (2989, 27180), (3020, 26901), (3171, 25620), (3660, 22197), (3843, 21140), (4228, 19215), (4270, 19026), (4410, 18422), (4530, 17934), (5124, 15855), (5285, 15372), (5436, 14945), (5490, 14798), (5978, 13590), (6342, 12810), (6405, 12684), (6795, 11956), (7399, 10980), (7686, 10570), (8540, 9513), (8820, 9211), (8967, 9060)]