78420680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{631}}^1$

素因数の和:894

約数の個数: 64

約数和(自身を含む): 191116800

約数和(自身を除く): 112696120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 239, 260, 478, 520, 631, 956, 1195, 1262, 1912, 2390, 2524, 3107, 3155, 4780, 5048, 6214, 6310, 8203, 9560, 12428, 12620, 15535, 16406, 24856, 25240, 31070, 32812, 41015, 62140, 65624, 82030, 124280, 150809, 164060, 301618, 328120, 603236, 754045, 1206472, 1508090, 1960517, 3016180, 3921034, 6032360, 7842068, 9802585, 15684136, 19605170, 39210340, 78420680]

約数ペア:

[(1, 78420680), (2, 39210340), (4, 19605170), (5, 15684136), (8, 9802585), (10, 7842068), (13, 6032360), (20, 3921034), (26, 3016180), (40, 1960517), (52, 1508090), (65, 1206472), (104, 754045), (130, 603236), (239, 328120), (260, 301618), (478, 164060), (520, 150809), (631, 124280), (956, 82030), (1195, 65624), (1262, 62140), (1912, 41015), (2390, 32812), (2524, 31070), (3107, 25240), (3155, 24856), (4780, 16406), (5048, 15535), (6214, 12620), (6310, 12428), (8203, 9560)]