318880880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1811}}^1$

素因数の和:1926

約数の個数: 80

約数和(自身を含む): 776521728

約数和(自身を除く): 457640848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 71, 80, 124, 142, 155, 248, 284, 310, 355, 496, 568, 620, 710, 1136, 1240, 1420, 1811, 2201, 2480, 2840, 3622, 4402, 5680, 7244, 8804, 9055, 11005, 14488, 17608, 18110, 22010, 28976, 35216, 36220, 44020, 56141, 72440, 88040, 112282, 128581, 144880, 176080, 224564, 257162, 280705, 449128, 514324, 561410, 642905, 898256, 1028648, 1122820, 1285810, 2057296, 2245640, 2571620, 3986011, 4491280, 5143240, 7972022, 10286480, 15944044, 19930055, 31888088, 39860110, 63776176, 79720220, 159440440, 318880880]

約数ペア:

[(1, 318880880), (2, 159440440), (4, 79720220), (5, 63776176), (8, 39860110), (10, 31888088), (16, 19930055), (20, 15944044), (31, 10286480), (40, 7972022), (62, 5143240), (71, 4491280), (80, 3986011), (124, 2571620), (142, 2245640), (155, 2057296), (248, 1285810), (284, 1122820), (310, 1028648), (355, 898256), (496, 642905), (568, 561410), (620, 514324), (710, 449128), (1136, 280705), (1240, 257162), (1420, 224564), (1811, 176080), (2201, 144880), (2480, 128581), (2840, 112282), (3622, 88040), (4402, 72440), (5680, 56141), (7244, 44020), (8804, 36220), (9055, 35216), (11005, 28976), (14488, 22010), (17608, 18110)]