20189636840

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{653}}^1\times {\mathrm{2939}}^1$

素因数の和:3866

約数の個数: 64

約数和(自身を含む): 45684777600

約数和(自身を除く): 25495140760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 653, 1052, 1306, 1315, 2104, 2612, 2630, 2939, 3265, 5224, 5260, 5878, 6530, 10520, 11756, 13060, 14695, 23512, 26120, 29390, 58780, 117560, 171739, 343478, 686956, 772957, 858695, 1373912, 1545914, 1717390, 1919167, 3091828, 3434780, 3838334, 3864785, 6183656, 6869560, 7676668, 7729570, 9595835, 15353336, 15459140, 19191670, 30918280, 38383340, 76766680, 504740921, 1009481842, 2018963684, 2523704605, 4037927368, 5047409210, 10094818420, 20189636840]

約数ペア:

[(1, 20189636840), (2, 10094818420), (4, 5047409210), (5, 4037927368), (8, 2523704605), (10, 2018963684), (20, 1009481842), (40, 504740921), (263, 76766680), (526, 38383340), (653, 30918280), (1052, 19191670), (1306, 15459140), (1315, 15353336), (2104, 9595835), (2612, 7729570), (2630, 7676668), (2939, 6869560), (3265, 6183656), (5224, 3864785), (5260, 3838334), (5878, 3434780), (6530, 3091828), (10520, 1919167), (11756, 1717390), (13060, 1545914), (14695, 1373912), (23512, 858695), (26120, 772957), (29390, 686956), (58780, 343478), (117560, 171739)]