81120

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^2$

素因数の和:44

約数の個数: 72

約数和(自身を含む): 276696

約数和(自身を除く): 195576

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 65, 78, 80, 96, 104, 120, 130, 156, 160, 169, 195, 208, 240, 260, 312, 338, 390, 416, 480, 507, 520, 624, 676, 780, 845, 1014, 1040, 1248, 1352, 1560, 1690, 2028, 2080, 2535, 2704, 3120, 3380, 4056, 5070, 5408, 6240, 6760, 8112, 10140, 13520, 16224, 20280, 27040, 40560, 81120]

約数ペア:

[(1, 81120), (2, 40560), (3, 27040), (4, 20280), (5, 16224), (6, 13520), (8, 10140), (10, 8112), (12, 6760), (13, 6240), (15, 5408), (16, 5070), (20, 4056), (24, 3380), (26, 3120), (30, 2704), (32, 2535), (39, 2080), (40, 2028), (48, 1690), (52, 1560), (60, 1352), (65, 1248), (78, 1040), (80, 1014), (96, 845), (104, 780), (120, 676), (130, 624), (156, 520), (160, 507), (169, 480), (195, 416), (208, 390), (240, 338), (260, 312)]