21095920

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7127}}^1$

素因数の和:7177

約数の個数: 40

約数和(自身を含む): 50380704

約数和(自身を除く): 29284784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 7127, 14254, 28508, 35635, 57016, 71270, 114032, 142540, 263699, 285080, 527398, 570160, 1054796, 1318495, 2109592, 2636990, 4219184, 5273980, 10547960, 21095920]

約数ペア:

[(1, 21095920), (2, 10547960), (4, 5273980), (5, 4219184), (8, 2636990), (10, 2109592), (16, 1318495), (20, 1054796), (37, 570160), (40, 527398), (74, 285080), (80, 263699), (148, 142540), (185, 114032), (296, 71270), (370, 57016), (592, 35635), (740, 28508), (1480, 14254), (2960, 7127)]