81644920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{3691}}^1$

素因数の和:3788

約数の個数: 64

約数和(自身を含む): 212659200

約数和(自身を除く): 131014280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 395, 553, 632, 790, 1106, 1580, 2212, 2765, 3160, 3691, 4424, 5530, 7382, 11060, 14764, 18455, 22120, 25837, 29528, 36910, 51674, 73820, 103348, 129185, 147640, 206696, 258370, 291589, 516740, 583178, 1033480, 1166356, 1457945, 2041123, 2332712, 2915890, 4082246, 5831780, 8164492, 10205615, 11663560, 16328984, 20411230, 40822460, 81644920]

約数ペア:

[(1, 81644920), (2, 40822460), (4, 20411230), (5, 16328984), (7, 11663560), (8, 10205615), (10, 8164492), (14, 5831780), (20, 4082246), (28, 2915890), (35, 2332712), (40, 2041123), (56, 1457945), (70, 1166356), (79, 1033480), (140, 583178), (158, 516740), (280, 291589), (316, 258370), (395, 206696), (553, 147640), (632, 129185), (790, 103348), (1106, 73820), (1580, 51674), (2212, 36910), (2765, 29528), (3160, 25837), (3691, 22120), (4424, 18455), (5530, 14764), (7382, 11060)]