21954510

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:151

約数の個数: 128

約数和(自身を含む): 62853120

約数和(自身を除く): 40898610

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 31, 43, 45, 54, 61, 62, 86, 90, 93, 122, 129, 135, 155, 183, 186, 215, 258, 270, 279, 305, 310, 366, 387, 430, 465, 549, 558, 610, 645, 774, 837, 915, 930, 1098, 1161, 1290, 1333, 1395, 1647, 1674, 1830, 1891, 1935, 2322, 2623, 2666, 2745, 2790, 3294, 3782, 3870, 3999, 4185, 5246, 5490, 5673, 5805, 6665, 7869, 7998, 8235, 8370, 9455, 11346, 11610, 11997, 13115, 13330, 15738, 16470, 17019, 18910, 19995, 23607, 23994, 26230, 28365, 34038, 35991, 39345, 39990, 47214, 51057, 56730, 59985, 70821, 71982, 78690, 81313, 85095, 102114, 118035, 119970, 141642, 162626, 170190, 179955, 236070, 243939, 255285, 354105, 359910, 406565, 487878, 510570, 708210, 731817, 813130, 1219695, 1463634, 2195451, 2439390, 3659085, 4390902, 7318170, 10977255, 21954510]

約数ペア:

[(1, 21954510), (2, 10977255), (3, 7318170), (5, 4390902), (6, 3659085), (9, 2439390), (10, 2195451), (15, 1463634), (18, 1219695), (27, 813130), (30, 731817), (31, 708210), (43, 510570), (45, 487878), (54, 406565), (61, 359910), (62, 354105), (86, 255285), (90, 243939), (93, 236070), (122, 179955), (129, 170190), (135, 162626), (155, 141642), (183, 119970), (186, 118035), (215, 102114), (258, 85095), (270, 81313), (279, 78690), (305, 71982), (310, 70821), (366, 59985), (387, 56730), (430, 51057), (465, 47214), (549, 39990), (558, 39345), (610, 35991), (645, 34038), (774, 28365), (837, 26230), (915, 23994), (930, 23607), (1098, 19995), (1161, 18910), (1290, 17019), (1333, 16470), (1395, 15738), (1647, 13330), (1674, 13115), (1830, 11997), (1891, 11610), (1935, 11346), (2322, 9455), (2623, 8370), (2666, 8235), (2745, 7998), (2790, 7869), (3294, 6665), (3782, 5805), (3870, 5673), (3999, 5490), (4185, 5246)]