20405600

素因数分解:

$2^5\times 5^2\times {\mathrm{23}}^1\times {\mathrm{1109}}^1$

素因数の和:1152

約数の個数: 72

約数和(自身を含む): 52027920

約数和(自身を除く): 31622320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 80, 92, 100, 115, 160, 184, 200, 230, 368, 400, 460, 575, 736, 800, 920, 1109, 1150, 1840, 2218, 2300, 3680, 4436, 4600, 5545, 8872, 9200, 11090, 17744, 18400, 22180, 25507, 27725, 35488, 44360, 51014, 55450, 88720, 102028, 110900, 127535, 177440, 204056, 221800, 255070, 408112, 443600, 510140, 637675, 816224, 887200, 1020280, 1275350, 2040560, 2550700, 4081120, 5101400, 10202800, 20405600]

約数ペア:

[(1, 20405600), (2, 10202800), (4, 5101400), (5, 4081120), (8, 2550700), (10, 2040560), (16, 1275350), (20, 1020280), (23, 887200), (25, 816224), (32, 637675), (40, 510140), (46, 443600), (50, 408112), (80, 255070), (92, 221800), (100, 204056), (115, 177440), (160, 127535), (184, 110900), (200, 102028), (230, 88720), (368, 55450), (400, 51014), (460, 44360), (575, 35488), (736, 27725), (800, 25507), (920, 22180), (1109, 18400), (1150, 17744), (1840, 11090), (2218, 9200), (2300, 8872), (3680, 5545), (4436, 4600)]