21807848

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 41877000

約数和(自身を除く): 20069152

約数列:

[1, 2, 4, 8, 89, 109, 178, 218, 281, 356, 436, 562, 712, 872, 1124, 2248, 9701, 19402, 25009, 30629, 38804, 50018, 61258, 77608, 100036, 122516, 200072, 245032, 2725981, 5451962, 10903924, 21807848]

約数ペア:

[(1, 21807848), (2, 10903924), (4, 5451962), (8, 2725981), (89, 245032), (109, 200072), (178, 122516), (218, 100036), (281, 77608), (356, 61258), (436, 50018), (562, 38804), (712, 30629), (872, 25009), (1124, 19402), (2248, 9701)]