31381290

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1637}}^1$

素因数の和:1724

約数の個数: 64

約数和(自身を含む): 84913920

約数和(自身を除く): 53532630

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 71, 90, 135, 142, 213, 270, 355, 426, 639, 710, 1065, 1278, 1637, 1917, 2130, 3195, 3274, 3834, 4911, 6390, 8185, 9585, 9822, 14733, 16370, 19170, 24555, 29466, 44199, 49110, 73665, 88398, 116227, 147330, 220995, 232454, 348681, 441990, 581135, 697362, 1046043, 1162270, 1743405, 2092086, 3138129, 3486810, 5230215, 6276258, 10460430, 15690645, 31381290]

約数ペア:

[(1, 31381290), (2, 15690645), (3, 10460430), (5, 6276258), (6, 5230215), (9, 3486810), (10, 3138129), (15, 2092086), (18, 1743405), (27, 1162270), (30, 1046043), (45, 697362), (54, 581135), (71, 441990), (90, 348681), (135, 232454), (142, 220995), (213, 147330), (270, 116227), (355, 88398), (426, 73665), (639, 49110), (710, 44199), (1065, 29466), (1278, 24555), (1637, 19170), (1917, 16370), (2130, 14733), (3195, 9822), (3274, 9585), (3834, 8185), (4911, 6390)]