31049980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{389}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 70630560

約数和(自身を除く): 39580580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 307, 389, 614, 778, 1228, 1535, 1556, 1945, 3070, 3890, 3991, 5057, 6140, 7780, 7982, 10114, 15964, 19955, 20228, 25285, 39910, 50570, 79820, 101140, 119423, 238846, 477692, 597115, 1194230, 1552499, 2388460, 3104998, 6209996, 7762495, 15524990, 31049980]

約数ペア:

[(1, 31049980), (2, 15524990), (4, 7762495), (5, 6209996), (10, 3104998), (13, 2388460), (20, 1552499), (26, 1194230), (52, 597115), (65, 477692), (130, 238846), (260, 119423), (307, 101140), (389, 79820), (614, 50570), (778, 39910), (1228, 25285), (1535, 20228), (1556, 19955), (1945, 15964), (3070, 10114), (3890, 7982), (3991, 7780), (5057, 6140)]