178935640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{3407}}^1$

素因数の和:3532

約数の個数: 64

約数和(自身を含む): 437996160

約数和(自身を除く): 259060520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 101, 104, 130, 202, 260, 404, 505, 520, 808, 1010, 1313, 2020, 2626, 3407, 4040, 5252, 6565, 6814, 10504, 13130, 13628, 17035, 26260, 27256, 34070, 44291, 52520, 68140, 88582, 136280, 177164, 221455, 344107, 354328, 442910, 688214, 885820, 1376428, 1720535, 1771640, 2752856, 3441070, 4473391, 6882140, 8946782, 13764280, 17893564, 22366955, 35787128, 44733910, 89467820, 178935640]

約数ペア:

[(1, 178935640), (2, 89467820), (4, 44733910), (5, 35787128), (8, 22366955), (10, 17893564), (13, 13764280), (20, 8946782), (26, 6882140), (40, 4473391), (52, 3441070), (65, 2752856), (101, 1771640), (104, 1720535), (130, 1376428), (202, 885820), (260, 688214), (404, 442910), (505, 354328), (520, 344107), (808, 221455), (1010, 177164), (1313, 136280), (2020, 88582), (2626, 68140), (3407, 52520), (4040, 44291), (5252, 34070), (6565, 27256), (6814, 26260), (10504, 17035), (13130, 13628)]