81798040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2503}}^1$

素因数の和:2576

約数の個数: 64

約数和(自身を含む): 198316800

約数和(自身を除く): 116518760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 1634, 1720, 2503, 3268, 4085, 5006, 6536, 8170, 10012, 12515, 16340, 20024, 25030, 32680, 47557, 50060, 95114, 100120, 107629, 190228, 215258, 237785, 380456, 430516, 475570, 538145, 861032, 951140, 1076290, 1902280, 2044951, 2152580, 4089902, 4305160, 8179804, 10224755, 16359608, 20449510, 40899020, 81798040]

約数ペア:

[(1, 81798040), (2, 40899020), (4, 20449510), (5, 16359608), (8, 10224755), (10, 8179804), (19, 4305160), (20, 4089902), (38, 2152580), (40, 2044951), (43, 1902280), (76, 1076290), (86, 951140), (95, 861032), (152, 538145), (172, 475570), (190, 430516), (215, 380456), (344, 237785), (380, 215258), (430, 190228), (760, 107629), (817, 100120), (860, 95114), (1634, 50060), (1720, 47557), (2503, 32680), (3268, 25030), (4085, 20024), (5006, 16340), (6536, 12515), (8170, 10012)]