31325775

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{89}}^1$

素因数の和:153

約数の個数: 72

約数和(自身を含む): 59527440

約数和(自身を除く): 28201665

約数列:

[1, 3, 5, 13, 15, 19, 25, 39, 57, 65, 75, 89, 95, 195, 247, 267, 285, 325, 361, 445, 475, 741, 975, 1083, 1157, 1235, 1335, 1425, 1691, 1805, 2225, 3471, 3705, 4693, 5073, 5415, 5785, 6175, 6675, 8455, 9025, 14079, 17355, 18525, 21983, 23465, 25365, 27075, 28925, 32129, 42275, 65949, 70395, 86775, 96387, 109915, 117325, 126825, 160645, 329745, 351975, 417677, 481935, 549575, 803225, 1253031, 1648725, 2088385, 2409675, 6265155, 10441925, 31325775]

約数ペア:

[(1, 31325775), (3, 10441925), (5, 6265155), (13, 2409675), (15, 2088385), (19, 1648725), (25, 1253031), (39, 803225), (57, 549575), (65, 481935), (75, 417677), (89, 351975), (95, 329745), (195, 160645), (247, 126825), (267, 117325), (285, 109915), (325, 96387), (361, 86775), (445, 70395), (475, 65949), (741, 42275), (975, 32129), (1083, 28925), (1157, 27075), (1235, 25365), (1335, 23465), (1425, 21983), (1691, 18525), (1805, 17355), (2225, 14079), (3471, 9025), (3705, 8455), (4693, 6675), (5073, 6175), (5415, 5785)]