20212992020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{71917}}^1$

素因数の和:72009

約数の個数: 96

約数和(自身を含む): 48715527168

約数和(自身を除く): 28502535148

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 47, 52, 65, 92, 94, 115, 130, 188, 230, 235, 260, 299, 460, 470, 598, 611, 940, 1081, 1196, 1222, 1495, 2162, 2444, 2990, 3055, 4324, 5405, 5980, 6110, 10810, 12220, 14053, 21620, 28106, 56212, 70265, 71917, 140530, 143834, 281060, 287668, 359585, 719170, 934921, 1438340, 1654091, 1869842, 3308182, 3380099, 3739684, 4674605, 6616364, 6760198, 8270455, 9349210, 13520396, 16540910, 16900495, 18698420, 21503183, 33081820, 33800990, 43006366, 43941287, 67601980, 77742277, 86012732, 87882574, 107515915, 155484554, 175765148, 215031830, 219706435, 310969108, 388711385, 430063660, 439412870, 777422770, 878825740, 1010649601, 1554845540, 2021299202, 4042598404, 5053248005, 10106496010, 20212992020]

約数ペア:

[(1, 20212992020), (2, 10106496010), (4, 5053248005), (5, 4042598404), (10, 2021299202), (13, 1554845540), (20, 1010649601), (23, 878825740), (26, 777422770), (46, 439412870), (47, 430063660), (52, 388711385), (65, 310969108), (92, 219706435), (94, 215031830), (115, 175765148), (130, 155484554), (188, 107515915), (230, 87882574), (235, 86012732), (260, 77742277), (299, 67601980), (460, 43941287), (470, 43006366), (598, 33800990), (611, 33081820), (940, 21503183), (1081, 18698420), (1196, 16900495), (1222, 16540910), (1495, 13520396), (2162, 9349210), (2444, 8270455), (2990, 6760198), (3055, 6616364), (4324, 4674605), (5405, 3739684), (5980, 3380099), (6110, 3308182), (10810, 1869842), (12220, 1654091), (14053, 1438340), (21620, 934921), (28106, 719170), (56212, 359585), (70265, 287668), (71917, 281060), (140530, 143834)]