20797875

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:186

約数の個数: 96

約数和(自身を含む): 45427200

約数和(自身を除く): 24629325

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 35, 45, 57, 63, 75, 95, 105, 125, 133, 139, 171, 175, 225, 285, 315, 375, 399, 417, 475, 525, 665, 695, 855, 875, 973, 1125, 1197, 1251, 1425, 1575, 1995, 2085, 2375, 2625, 2641, 2919, 3325, 3475, 4275, 4865, 5985, 6255, 7125, 7875, 7923, 8757, 9975, 10425, 13205, 14595, 16625, 17375, 18487, 21375, 23769, 24325, 29925, 31275, 39615, 43785, 49875, 52125, 55461, 66025, 72975, 92435, 118845, 121625, 149625, 156375, 166383, 198075, 218925, 277305, 330125, 364875, 462175, 594225, 831915, 990375, 1094625, 1386525, 2310875, 2971125, 4159575, 6932625, 20797875]

約数ペア:

[(1, 20797875), (3, 6932625), (5, 4159575), (7, 2971125), (9, 2310875), (15, 1386525), (19, 1094625), (21, 990375), (25, 831915), (35, 594225), (45, 462175), (57, 364875), (63, 330125), (75, 277305), (95, 218925), (105, 198075), (125, 166383), (133, 156375), (139, 149625), (171, 121625), (175, 118845), (225, 92435), (285, 72975), (315, 66025), (375, 55461), (399, 52125), (417, 49875), (475, 43785), (525, 39615), (665, 31275), (695, 29925), (855, 24325), (875, 23769), (973, 21375), (1125, 18487), (1197, 17375), (1251, 16625), (1425, 14595), (1575, 13205), (1995, 10425), (2085, 9975), (2375, 8757), (2625, 7923), (2641, 7875), (2919, 7125), (3325, 6255), (3475, 5985), (4275, 4865)]