20165080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:213

約数の個数: 96

約数和(自身を含む): 52045200

約数和(自身を除く): 31880120

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 157, 169, 190, 247, 260, 314, 338, 380, 494, 520, 628, 676, 760, 785, 845, 988, 1235, 1256, 1352, 1570, 1690, 1976, 2041, 2470, 2983, 3140, 3211, 3380, 4082, 4940, 5966, 6280, 6422, 6760, 8164, 9880, 10205, 11932, 12844, 14915, 16055, 16328, 20410, 23864, 25688, 26533, 29830, 32110, 38779, 40820, 53066, 59660, 64220, 77558, 81640, 106132, 119320, 128440, 132665, 155116, 193895, 212264, 265330, 310232, 387790, 504127, 530660, 775580, 1008254, 1061320, 1551160, 2016508, 2520635, 4033016, 5041270, 10082540, 20165080]

約数ペア:

[(1, 20165080), (2, 10082540), (4, 5041270), (5, 4033016), (8, 2520635), (10, 2016508), (13, 1551160), (19, 1061320), (20, 1008254), (26, 775580), (38, 530660), (40, 504127), (52, 387790), (65, 310232), (76, 265330), (95, 212264), (104, 193895), (130, 155116), (152, 132665), (157, 128440), (169, 119320), (190, 106132), (247, 81640), (260, 77558), (314, 64220), (338, 59660), (380, 53066), (494, 40820), (520, 38779), (628, 32110), (676, 29830), (760, 26533), (785, 25688), (845, 23864), (988, 20410), (1235, 16328), (1256, 16055), (1352, 14915), (1570, 12844), (1690, 11932), (1976, 10205), (2041, 9880), (2470, 8164), (2983, 6760), (3140, 6422), (3211, 6280), (3380, 5966), (4082, 4940)]