18107720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{859}}^1$

素因数の和:918

約数の個数: 64

約数和(自身を含む): 44582400

約数和(自身を除く): 26474680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 85, 124, 136, 155, 170, 248, 310, 340, 527, 620, 680, 859, 1054, 1240, 1718, 2108, 2635, 3436, 4216, 4295, 5270, 6872, 8590, 10540, 14603, 17180, 21080, 26629, 29206, 34360, 53258, 58412, 73015, 106516, 116824, 133145, 146030, 213032, 266290, 292060, 452693, 532580, 584120, 905386, 1065160, 1810772, 2263465, 3621544, 4526930, 9053860, 18107720]

約数ペア:

[(1, 18107720), (2, 9053860), (4, 4526930), (5, 3621544), (8, 2263465), (10, 1810772), (17, 1065160), (20, 905386), (31, 584120), (34, 532580), (40, 452693), (62, 292060), (68, 266290), (85, 213032), (124, 146030), (136, 133145), (155, 116824), (170, 106516), (248, 73015), (310, 58412), (340, 53258), (527, 34360), (620, 29206), (680, 26629), (859, 21080), (1054, 17180), (1240, 14603), (1718, 10540), (2108, 8590), (2635, 6872), (3436, 5270), (4216, 4295)]