21412640

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3617}}^1$

素因数の和:3669

約数の個数: 48

約数和(自身を含む): 51968952

約数和(自身を除く): 30556312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 3617, 5920, 7234, 14468, 18085, 28936, 36170, 57872, 72340, 115744, 133829, 144680, 267658, 289360, 535316, 578720, 669145, 1070632, 1338290, 2141264, 2676580, 4282528, 5353160, 10706320, 21412640]

約数ペア:

[(1, 21412640), (2, 10706320), (4, 5353160), (5, 4282528), (8, 2676580), (10, 2141264), (16, 1338290), (20, 1070632), (32, 669145), (37, 578720), (40, 535316), (74, 289360), (80, 267658), (148, 144680), (160, 133829), (185, 115744), (296, 72340), (370, 57872), (592, 36170), (740, 28936), (1184, 18085), (1480, 14468), (2960, 7234), (3617, 5920)]