21173472

素因数分解:

$2^5\times 3^2\times {\mathrm{37}}^1\times {\mathrm{1987}}^1$

素因数の和:2040

約数の個数: 72

約数和(自身を含む): 61870536

約数和(自身を除く): 40697064

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 37, 48, 72, 74, 96, 111, 144, 148, 222, 288, 296, 333, 444, 592, 666, 888, 1184, 1332, 1776, 1987, 2664, 3552, 3974, 5328, 5961, 7948, 10656, 11922, 15896, 17883, 23844, 31792, 35766, 47688, 63584, 71532, 73519, 95376, 143064, 147038, 190752, 220557, 286128, 294076, 441114, 572256, 588152, 661671, 882228, 1176304, 1323342, 1764456, 2352608, 2646684, 3528912, 5293368, 7057824, 10586736, 21173472]

約数ペア:

[(1, 21173472), (2, 10586736), (3, 7057824), (4, 5293368), (6, 3528912), (8, 2646684), (9, 2352608), (12, 1764456), (16, 1323342), (18, 1176304), (24, 882228), (32, 661671), (36, 588152), (37, 572256), (48, 441114), (72, 294076), (74, 286128), (96, 220557), (111, 190752), (144, 147038), (148, 143064), (222, 95376), (288, 73519), (296, 71532), (333, 63584), (444, 47688), (592, 35766), (666, 31792), (888, 23844), (1184, 17883), (1332, 15896), (1776, 11922), (1987, 10656), (2664, 7948), (3552, 5961), (3974, 5328)]