18689125

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:119

約数の個数: 64

約数和(自身を含む): 30191616

約数和(自身を除く): 11502491

約数列:

[1, 5, 7, 13, 25, 31, 35, 53, 65, 91, 125, 155, 175, 217, 265, 325, 371, 403, 455, 689, 775, 875, 1085, 1325, 1625, 1643, 1855, 2015, 2275, 2821, 3445, 3875, 4823, 5425, 6625, 8215, 9275, 10075, 11375, 11501, 14105, 17225, 21359, 24115, 27125, 41075, 46375, 50375, 57505, 70525, 86125, 106795, 120575, 149513, 205375, 287525, 352625, 533975, 602875, 747565, 1437625, 2669875, 3737825, 18689125]

約数ペア:

[(1, 18689125), (5, 3737825), (7, 2669875), (13, 1437625), (25, 747565), (31, 602875), (35, 533975), (53, 352625), (65, 287525), (91, 205375), (125, 149513), (155, 120575), (175, 106795), (217, 86125), (265, 70525), (325, 57505), (371, 50375), (403, 46375), (455, 41075), (689, 27125), (775, 24115), (875, 21359), (1085, 17225), (1325, 14105), (1625, 11501), (1643, 11375), (1855, 10075), (2015, 9275), (2275, 8215), (2821, 6625), (3445, 5425), (3875, 4823)]