219954920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{177383}}^1$

素因数の和:177425

約数の個数: 32

約数和(自身を含む): 510865920

約数和(自身を除く): 290911000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 177383, 354766, 709532, 886915, 1419064, 1773830, 3547660, 5498873, 7095320, 10997746, 21995492, 27494365, 43990984, 54988730, 109977460, 219954920]

約数ペア:

[(1, 219954920), (2, 109977460), (4, 54988730), (5, 43990984), (8, 27494365), (10, 21995492), (20, 10997746), (31, 7095320), (40, 5498873), (62, 3547660), (124, 1773830), (155, 1419064), (248, 886915), (310, 709532), (620, 354766), (1240, 177383)]