64858820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{619}}^1$

素因数の和:685

約数の個数: 72

約数和(自身を含む): 152490240

約数和(自身を除く): 87631420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 260, 310, 338, 403, 619, 620, 676, 806, 845, 1238, 1612, 1690, 2015, 2476, 3095, 3380, 4030, 5239, 6190, 8047, 8060, 10478, 12380, 16094, 19189, 20956, 26195, 32188, 38378, 40235, 52390, 76756, 80470, 95945, 104611, 104780, 160940, 191890, 209222, 249457, 383780, 418444, 498914, 523055, 997828, 1046110, 1247285, 2092220, 2494570, 3242941, 4989140, 6485882, 12971764, 16214705, 32429410, 64858820]

約数ペア:

[(1, 64858820), (2, 32429410), (4, 16214705), (5, 12971764), (10, 6485882), (13, 4989140), (20, 3242941), (26, 2494570), (31, 2092220), (52, 1247285), (62, 1046110), (65, 997828), (124, 523055), (130, 498914), (155, 418444), (169, 383780), (260, 249457), (310, 209222), (338, 191890), (403, 160940), (619, 104780), (620, 104611), (676, 95945), (806, 80470), (845, 76756), (1238, 52390), (1612, 40235), (1690, 38378), (2015, 32188), (2476, 26195), (3095, 20956), (3380, 19189), (4030, 16094), (5239, 12380), (6190, 10478), (8047, 8060)]