21314800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{4099}}^1$

素因数の和:4130

約数の個数: 60

約数和(自身を含む): 55161400

約数和(自身を除く): 33846600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 4099, 5200, 8198, 16396, 20495, 32792, 40990, 53287, 65584, 81980, 102475, 106574, 163960, 204950, 213148, 266435, 327920, 409900, 426296, 532870, 819800, 852592, 1065740, 1332175, 1639600, 2131480, 2664350, 4262960, 5328700, 10657400, 21314800]

約数ペア:

[(1, 21314800), (2, 10657400), (4, 5328700), (5, 4262960), (8, 2664350), (10, 2131480), (13, 1639600), (16, 1332175), (20, 1065740), (25, 852592), (26, 819800), (40, 532870), (50, 426296), (52, 409900), (65, 327920), (80, 266435), (100, 213148), (104, 204950), (130, 163960), (200, 106574), (208, 102475), (260, 81980), (325, 65584), (400, 53287), (520, 40990), (650, 32792), (1040, 20495), (1300, 16396), (2600, 8198), (4099, 5200)]