20190109840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{781351}}^1$

素因数の和:781400

約数の個数: 80

約数和(自身を含む): 52319329920

約数和(自身を除く): 32129220080

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 1292, 1360, 1520, 1615, 2584, 3230, 5168, 6460, 12920, 25840, 781351, 1562702, 3125404, 3906755, 6250808, 7813510, 12501616, 13282967, 14845669, 15627020, 26565934, 29691338, 31254040, 53131868, 59382676, 62508080, 66414835, 74228345, 106263736, 118765352, 132829670, 148456690, 212527472, 237530704, 252376373, 265659340, 296913380, 504752746, 531318680, 593826760, 1009505492, 1062637360, 1187653520, 1261881865, 2019010984, 2523763730, 4038021968, 5047527460, 10095054920, 20190109840]

約数ペア:

[(1, 20190109840), (2, 10095054920), (4, 5047527460), (5, 4038021968), (8, 2523763730), (10, 2019010984), (16, 1261881865), (17, 1187653520), (19, 1062637360), (20, 1009505492), (34, 593826760), (38, 531318680), (40, 504752746), (68, 296913380), (76, 265659340), (80, 252376373), (85, 237530704), (95, 212527472), (136, 148456690), (152, 132829670), (170, 118765352), (190, 106263736), (272, 74228345), (304, 66414835), (323, 62508080), (340, 59382676), (380, 53131868), (646, 31254040), (680, 29691338), (760, 26565934), (1292, 15627020), (1360, 14845669), (1520, 13282967), (1615, 12501616), (2584, 7813510), (3230, 6250808), (5168, 3906755), (6460, 3125404), (12920, 1562702), (25840, 781351)]