21725080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1019}}^1$

素因数の和:1084

約数の個数: 64

約数和(自身を含む): 53978400

約数和(自身を除く): 32253320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 1019, 1066, 1640, 2038, 2132, 2665, 4076, 4264, 5095, 5330, 8152, 10190, 10660, 13247, 20380, 21320, 26494, 40760, 41779, 52988, 66235, 83558, 105976, 132470, 167116, 208895, 264940, 334232, 417790, 529880, 543127, 835580, 1086254, 1671160, 2172508, 2715635, 4345016, 5431270, 10862540, 21725080]

約数ペア:

[(1, 21725080), (2, 10862540), (4, 5431270), (5, 4345016), (8, 2715635), (10, 2172508), (13, 1671160), (20, 1086254), (26, 835580), (40, 543127), (41, 529880), (52, 417790), (65, 334232), (82, 264940), (104, 208895), (130, 167116), (164, 132470), (205, 105976), (260, 83558), (328, 66235), (410, 52988), (520, 41779), (533, 40760), (820, 26494), (1019, 21320), (1066, 20380), (1640, 13247), (2038, 10660), (2132, 10190), (2665, 8152), (4076, 5330), (4264, 5095)]