13131820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2971}}^1$

素因数の和:3010

約数の個数: 48

約数和(自身を含む): 31455648

約数和(自身を除く): 18323828

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 2971, 4420, 5942, 11884, 14855, 29710, 38623, 50507, 59420, 77246, 101014, 154492, 193115, 202028, 252535, 386230, 505070, 656591, 772460, 1010140, 1313182, 2626364, 3282955, 6565910, 13131820]

約数ペア:

[(1, 13131820), (2, 6565910), (4, 3282955), (5, 2626364), (10, 1313182), (13, 1010140), (17, 772460), (20, 656591), (26, 505070), (34, 386230), (52, 252535), (65, 202028), (68, 193115), (85, 154492), (130, 101014), (170, 77246), (221, 59420), (260, 50507), (340, 38623), (442, 29710), (884, 14855), (1105, 11884), (2210, 5942), (2971, 4420)]