660920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:96

約数の個数: 64

約数和(自身を含む): 1693440

約数和(自身を除く): 1032520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 41, 52, 62, 65, 82, 104, 124, 130, 155, 164, 205, 248, 260, 310, 328, 403, 410, 520, 533, 620, 806, 820, 1066, 1240, 1271, 1612, 1640, 2015, 2132, 2542, 2665, 3224, 4030, 4264, 5084, 5330, 6355, 8060, 10168, 10660, 12710, 16120, 16523, 21320, 25420, 33046, 50840, 66092, 82615, 132184, 165230, 330460, 660920]

約数ペア:

[(1, 660920), (2, 330460), (4, 165230), (5, 132184), (8, 82615), (10, 66092), (13, 50840), (20, 33046), (26, 25420), (31, 21320), (40, 16523), (41, 16120), (52, 12710), (62, 10660), (65, 10168), (82, 8060), (104, 6355), (124, 5330), (130, 5084), (155, 4264), (164, 4030), (205, 3224), (248, 2665), (260, 2542), (310, 2132), (328, 2015), (403, 1640), (410, 1612), (520, 1271), (533, 1240), (620, 1066), (806, 820)]