20309120

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2441}}^1$

素因数の和:2473

約数の個数: 64

約数和(自身を含む): 52307640

約数和(自身を除く): 31998520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 2441, 4160, 4882, 8320, 9764, 12205, 19528, 24410, 31733, 39056, 48820, 63466, 78112, 97640, 126932, 156224, 158665, 195280, 253864, 312448, 317330, 390560, 507728, 634660, 781120, 1015456, 1269320, 1562240, 2030912, 2538640, 4061824, 5077280, 10154560, 20309120]

約数ペア:

[(1, 20309120), (2, 10154560), (4, 5077280), (5, 4061824), (8, 2538640), (10, 2030912), (13, 1562240), (16, 1269320), (20, 1015456), (26, 781120), (32, 634660), (40, 507728), (52, 390560), (64, 317330), (65, 312448), (80, 253864), (104, 195280), (128, 158665), (130, 156224), (160, 126932), (208, 97640), (260, 78112), (320, 63466), (416, 48820), (520, 39056), (640, 31733), (832, 24410), (1040, 19528), (1664, 12205), (2080, 9764), (2441, 8320), (4160, 4882)]