20965080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:313

約数の個数: 128

約数和(自身を含む): 68428800

約数和(自身を除く): 47463720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 43, 51, 60, 68, 85, 86, 102, 120, 129, 136, 170, 172, 204, 215, 239, 255, 258, 340, 344, 408, 430, 478, 510, 516, 645, 680, 717, 731, 860, 956, 1020, 1032, 1195, 1290, 1434, 1462, 1720, 1912, 2040, 2193, 2390, 2580, 2868, 2924, 3585, 3655, 4063, 4386, 4780, 5160, 5736, 5848, 7170, 7310, 8126, 8772, 9560, 10277, 10965, 12189, 14340, 14620, 16252, 17544, 20315, 20554, 21930, 24378, 28680, 29240, 30831, 32504, 40630, 41108, 43860, 48756, 51385, 60945, 61662, 81260, 82216, 87720, 97512, 102770, 121890, 123324, 154155, 162520, 174709, 205540, 243780, 246648, 308310, 349418, 411080, 487560, 524127, 616620, 698836, 873545, 1048254, 1233240, 1397672, 1747090, 2096508, 2620635, 3494180, 4193016, 5241270, 6988360, 10482540, 20965080]

約数ペア:

[(1, 20965080), (2, 10482540), (3, 6988360), (4, 5241270), (5, 4193016), (6, 3494180), (8, 2620635), (10, 2096508), (12, 1747090), (15, 1397672), (17, 1233240), (20, 1048254), (24, 873545), (30, 698836), (34, 616620), (40, 524127), (43, 487560), (51, 411080), (60, 349418), (68, 308310), (85, 246648), (86, 243780), (102, 205540), (120, 174709), (129, 162520), (136, 154155), (170, 123324), (172, 121890), (204, 102770), (215, 97512), (239, 87720), (255, 82216), (258, 81260), (340, 61662), (344, 60945), (408, 51385), (430, 48756), (478, 43860), (510, 41108), (516, 40630), (645, 32504), (680, 30831), (717, 29240), (731, 28680), (860, 24378), (956, 21930), (1020, 20554), (1032, 20315), (1195, 17544), (1290, 16252), (1434, 14620), (1462, 14340), (1720, 12189), (1912, 10965), (2040, 10277), (2193, 9560), (2390, 8772), (2580, 8126), (2868, 7310), (2924, 7170), (3585, 5848), (3655, 5736), (4063, 5160), (4386, 4780)]