21312016

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{419}}^1$

素因数の和:472

約数の個数: 60

約数和(自身を含む): 47965680

約数和(自身を除く): 26653664

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 68, 88, 136, 176, 187, 272, 289, 374, 419, 578, 748, 838, 1156, 1496, 1676, 2312, 2992, 3179, 3352, 4609, 4624, 6358, 6704, 7123, 9218, 12716, 14246, 18436, 25432, 28492, 36872, 50864, 56984, 73744, 78353, 113968, 121091, 156706, 242182, 313412, 484364, 626824, 968728, 1253648, 1332001, 1937456, 2664002, 5328004, 10656008, 21312016]

約数ペア:

[(1, 21312016), (2, 10656008), (4, 5328004), (8, 2664002), (11, 1937456), (16, 1332001), (17, 1253648), (22, 968728), (34, 626824), (44, 484364), (68, 313412), (88, 242182), (136, 156706), (176, 121091), (187, 113968), (272, 78353), (289, 73744), (374, 56984), (419, 50864), (578, 36872), (748, 28492), (838, 25432), (1156, 18436), (1496, 14246), (1676, 12716), (2312, 9218), (2992, 7123), (3179, 6704), (3352, 6358), (4609, 4624)]