28798640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27691}}^1$

素因数の和:27717

約数の個数: 40

約数和(自身を含む): 72109968

約数和(自身を除く): 43311328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27691, 55382, 110764, 138455, 221528, 276910, 359983, 443056, 553820, 719966, 1107640, 1439932, 1799915, 2215280, 2879864, 3599830, 5759728, 7199660, 14399320, 28798640]

約数ペア:

[(1, 28798640), (2, 14399320), (4, 7199660), (5, 5759728), (8, 3599830), (10, 2879864), (13, 2215280), (16, 1799915), (20, 1439932), (26, 1107640), (40, 719966), (52, 553820), (65, 443056), (80, 359983), (104, 276910), (130, 221528), (208, 138455), (260, 110764), (520, 55382), (1040, 27691)]