19661720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37811}}^1$

素因数の和:37835

約数の個数: 32

約数和(自身を含む): 47643120

約数和(自身を除く): 27981400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 37811, 75622, 151244, 189055, 302488, 378110, 491543, 756220, 983086, 1512440, 1966172, 2457715, 3932344, 4915430, 9830860, 19661720]

約数ペア:

[(1, 19661720), (2, 9830860), (4, 4915430), (5, 3932344), (8, 2457715), (10, 1966172), (13, 1512440), (20, 983086), (26, 756220), (40, 491543), (52, 378110), (65, 302488), (104, 189055), (130, 151244), (260, 75622), (520, 37811)]