18717375

素因数分解:

$3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:145

約数の個数: 64

約数和(自身を含む): 34145280

約数和(自身を除く): 15427905

約数列:

[1, 3, 5, 15, 19, 25, 37, 57, 71, 75, 95, 111, 125, 185, 213, 285, 355, 375, 475, 555, 703, 925, 1065, 1349, 1425, 1775, 2109, 2375, 2627, 2775, 3515, 4047, 4625, 5325, 6745, 7125, 7881, 8875, 10545, 13135, 13875, 17575, 20235, 26625, 33725, 39405, 49913, 52725, 65675, 87875, 101175, 149739, 168625, 197025, 249565, 263625, 328375, 505875, 748695, 985125, 1247825, 3743475, 6239125, 18717375]

約数ペア:

[(1, 18717375), (3, 6239125), (5, 3743475), (15, 1247825), (19, 985125), (25, 748695), (37, 505875), (57, 328375), (71, 263625), (75, 249565), (95, 197025), (111, 168625), (125, 149739), (185, 101175), (213, 87875), (285, 65675), (355, 52725), (375, 49913), (475, 39405), (555, 33725), (703, 26625), (925, 20235), (1065, 17575), (1349, 13875), (1425, 13135), (1775, 10545), (2109, 8875), (2375, 7881), (2627, 7125), (2775, 6745), (3515, 5325), (4047, 4625)]