20307040

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{751}}^1$

素因数の和:792

約数の個数: 72

約数和(自身を含む): 52018848

約数和(自身を除く): 31711808

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 169, 208, 260, 338, 416, 520, 676, 751, 845, 1040, 1352, 1502, 1690, 2080, 2704, 3004, 3380, 3755, 5408, 6008, 6760, 7510, 9763, 12016, 13520, 15020, 19526, 24032, 27040, 30040, 39052, 48815, 60080, 78104, 97630, 120160, 126919, 156208, 195260, 253838, 312416, 390520, 507676, 634595, 781040, 1015352, 1269190, 1562080, 2030704, 2538380, 4061408, 5076760, 10153520, 20307040]

約数ペア:

[(1, 20307040), (2, 10153520), (4, 5076760), (5, 4061408), (8, 2538380), (10, 2030704), (13, 1562080), (16, 1269190), (20, 1015352), (26, 781040), (32, 634595), (40, 507676), (52, 390520), (65, 312416), (80, 253838), (104, 195260), (130, 156208), (160, 126919), (169, 120160), (208, 97630), (260, 78104), (338, 60080), (416, 48815), (520, 39052), (676, 30040), (751, 27040), (845, 24032), (1040, 19526), (1352, 15020), (1502, 13520), (1690, 12016), (2080, 9763), (2704, 7510), (3004, 6760), (3380, 6008), (3755, 5408)]