31900840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1091}}^1$

素因数の和:1162

約数の個数: 64

約数和(自身を含む): 77837760

約数和(自身を除く): 45936920

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 43, 68, 85, 86, 136, 170, 172, 215, 340, 344, 430, 680, 731, 860, 1091, 1462, 1720, 2182, 2924, 3655, 4364, 5455, 5848, 7310, 8728, 10910, 14620, 18547, 21820, 29240, 37094, 43640, 46913, 74188, 92735, 93826, 148376, 185470, 187652, 234565, 370940, 375304, 469130, 741880, 797521, 938260, 1595042, 1876520, 3190084, 3987605, 6380168, 7975210, 15950420, 31900840]

約数ペア:

[(1, 31900840), (2, 15950420), (4, 7975210), (5, 6380168), (8, 3987605), (10, 3190084), (17, 1876520), (20, 1595042), (34, 938260), (40, 797521), (43, 741880), (68, 469130), (85, 375304), (86, 370940), (136, 234565), (170, 187652), (172, 185470), (215, 148376), (340, 93826), (344, 92735), (430, 74188), (680, 46913), (731, 43640), (860, 37094), (1091, 29240), (1462, 21820), (1720, 18547), (2182, 14620), (2924, 10910), (3655, 8728), (4364, 7310), (5455, 5848)]