81293420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{1637}}^1$

素因数の和:1850

約数の個数: 48

約数和(自身を含む): 184923648

約数和(自身を除く): 103630228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 191, 260, 382, 764, 955, 1637, 1910, 2483, 3274, 3820, 4966, 6548, 8185, 9932, 12415, 16370, 21281, 24830, 32740, 42562, 49660, 85124, 106405, 212810, 312667, 425620, 625334, 1250668, 1563335, 3126670, 4064671, 6253340, 8129342, 16258684, 20323355, 40646710, 81293420]

約数ペア:

[(1, 81293420), (2, 40646710), (4, 20323355), (5, 16258684), (10, 8129342), (13, 6253340), (20, 4064671), (26, 3126670), (52, 1563335), (65, 1250668), (130, 625334), (191, 425620), (260, 312667), (382, 212810), (764, 106405), (955, 85124), (1637, 49660), (1910, 42562), (2483, 32740), (3274, 24830), (3820, 21281), (4966, 16370), (6548, 12415), (8185, 9932)]