21342260

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1187}}^1$

素因数の和:1256

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26557900

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 580, 620, 899, 1187, 1798, 2374, 3596, 4495, 4748, 5935, 8990, 11870, 17980, 23740, 34423, 36797, 68846, 73594, 137692, 147188, 172115, 183985, 344230, 367970, 688460, 735940, 1067113, 2134226, 4268452, 5335565, 10671130, 21342260]

約数ペア:

[(1, 21342260), (2, 10671130), (4, 5335565), (5, 4268452), (10, 2134226), (20, 1067113), (29, 735940), (31, 688460), (58, 367970), (62, 344230), (116, 183985), (124, 172115), (145, 147188), (155, 137692), (290, 73594), (310, 68846), (580, 36797), (620, 34423), (899, 23740), (1187, 17980), (1798, 11870), (2374, 8990), (3596, 5935), (4495, 4748)]