20856400

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{2267}}^1$

素因数の和:2308

約数の個数: 60

約数和(自身を含む): 52309152

約数和(自身を除く): 31452752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 92, 100, 115, 184, 200, 230, 368, 400, 460, 575, 920, 1150, 1840, 2267, 2300, 4534, 4600, 9068, 9200, 11335, 18136, 22670, 36272, 45340, 52141, 56675, 90680, 104282, 113350, 181360, 208564, 226700, 260705, 417128, 453400, 521410, 834256, 906800, 1042820, 1303525, 2085640, 2607050, 4171280, 5214100, 10428200, 20856400]

約数ペア:

[(1, 20856400), (2, 10428200), (4, 5214100), (5, 4171280), (8, 2607050), (10, 2085640), (16, 1303525), (20, 1042820), (23, 906800), (25, 834256), (40, 521410), (46, 453400), (50, 417128), (80, 260705), (92, 226700), (100, 208564), (115, 181360), (184, 113350), (200, 104282), (230, 90680), (368, 56675), (400, 52141), (460, 45340), (575, 36272), (920, 22670), (1150, 18136), (1840, 11335), (2267, 9200), (2300, 9068), (4534, 4600)]