215788520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{1723}}^1$

素因数の和:1866

約数の個数: 64

約数和(自身を含む): 506442240

約数和(自身を除く): 290653720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 101, 124, 155, 202, 248, 310, 404, 505, 620, 808, 1010, 1240, 1723, 2020, 3131, 3446, 4040, 6262, 6892, 8615, 12524, 13784, 15655, 17230, 25048, 31310, 34460, 53413, 62620, 68920, 106826, 125240, 174023, 213652, 267065, 348046, 427304, 534130, 696092, 870115, 1068260, 1392184, 1740230, 2136520, 3480460, 5394713, 6960920, 10789426, 21578852, 26973565, 43157704, 53947130, 107894260, 215788520]

約数ペア:

[(1, 215788520), (2, 107894260), (4, 53947130), (5, 43157704), (8, 26973565), (10, 21578852), (20, 10789426), (31, 6960920), (40, 5394713), (62, 3480460), (101, 2136520), (124, 1740230), (155, 1392184), (202, 1068260), (248, 870115), (310, 696092), (404, 534130), (505, 427304), (620, 348046), (808, 267065), (1010, 213652), (1240, 174023), (1723, 125240), (2020, 106826), (3131, 68920), (3446, 62620), (4040, 53413), (6262, 34460), (6892, 31310), (8615, 25048), (12524, 17230), (13784, 15655)]