81918120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:144

約数の個数: 192

約数和(自身を含む): 272125440

約数和(自身を除く): 190207320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 31, 38, 40, 57, 60, 61, 62, 76, 93, 95, 114, 120, 122, 124, 152, 155, 183, 186, 190, 228, 244, 248, 285, 305, 310, 361, 366, 372, 380, 456, 465, 488, 570, 589, 610, 620, 722, 732, 744, 760, 915, 930, 1083, 1140, 1159, 1178, 1220, 1240, 1444, 1464, 1767, 1805, 1830, 1860, 1891, 2166, 2280, 2318, 2356, 2440, 2888, 2945, 3477, 3534, 3610, 3660, 3720, 3782, 4332, 4636, 4712, 5415, 5673, 5795, 5890, 6954, 7068, 7220, 7320, 7564, 8664, 8835, 9272, 9455, 10830, 11191, 11346, 11590, 11780, 13908, 14136, 14440, 15128, 17385, 17670, 18910, 21660, 22021, 22382, 22692, 23180, 23560, 27816, 28365, 33573, 34770, 35340, 35929, 37820, 43320, 44042, 44764, 45384, 46360, 55955, 56730, 66063, 67146, 69540, 70680, 71858, 75640, 88084, 89528, 107787, 110105, 111910, 113460, 132126, 134292, 139080, 143716, 167865, 176168, 179645, 215574, 220210, 223820, 226920, 264252, 268584, 287432, 330315, 335730, 359290, 431148, 440420, 447640, 528504, 538935, 660630, 671460, 682651, 718580, 862296, 880840, 1077870, 1321260, 1342920, 1365302, 1437160, 2047953, 2155740, 2642520, 2730604, 3413255, 4095906, 4311480, 5461208, 6826510, 8191812, 10239765, 13653020, 16383624, 20479530, 27306040, 40959060, 81918120]

約数ペア:

[(1, 81918120), (2, 40959060), (3, 27306040), (4, 20479530), (5, 16383624), (6, 13653020), (8, 10239765), (10, 8191812), (12, 6826510), (15, 5461208), (19, 4311480), (20, 4095906), (24, 3413255), (30, 2730604), (31, 2642520), (38, 2155740), (40, 2047953), (57, 1437160), (60, 1365302), (61, 1342920), (62, 1321260), (76, 1077870), (93, 880840), (95, 862296), (114, 718580), (120, 682651), (122, 671460), (124, 660630), (152, 538935), (155, 528504), (183, 447640), (186, 440420), (190, 431148), (228, 359290), (244, 335730), (248, 330315), (285, 287432), (305, 268584), (310, 264252), (361, 226920), (366, 223820), (372, 220210), (380, 215574), (456, 179645), (465, 176168), (488, 167865), (570, 143716), (589, 139080), (610, 134292), (620, 132126), (722, 113460), (732, 111910), (744, 110105), (760, 107787), (915, 89528), (930, 88084), (1083, 75640), (1140, 71858), (1159, 70680), (1178, 69540), (1220, 67146), (1240, 66063), (1444, 56730), (1464, 55955), (1767, 46360), (1805, 45384), (1830, 44764), (1860, 44042), (1891, 43320), (2166, 37820), (2280, 35929), (2318, 35340), (2356, 34770), (2440, 33573), (2888, 28365), (2945, 27816), (3477, 23560), (3534, 23180), (3610, 22692), (3660, 22382), (3720, 22021), (3782, 21660), (4332, 18910), (4636, 17670), (4712, 17385), (5415, 15128), (5673, 14440), (5795, 14136), (5890, 13908), (6954, 11780), (7068, 11590), (7220, 11346), (7320, 11191), (7564, 10830), (8664, 9455), (8835, 9272)]