28904240

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5923}}^1$

素因数の和:5997

約数の個数: 40

約数和(自身を含む): 68315568

約数和(自身を除く): 39411328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 5923, 11846, 23692, 29615, 47384, 59230, 94768, 118460, 236920, 361303, 473840, 722606, 1445212, 1806515, 2890424, 3613030, 5780848, 7226060, 14452120, 28904240]

約数ペア:

[(1, 28904240), (2, 14452120), (4, 7226060), (5, 5780848), (8, 3613030), (10, 2890424), (16, 1806515), (20, 1445212), (40, 722606), (61, 473840), (80, 361303), (122, 236920), (244, 118460), (305, 94768), (488, 59230), (610, 47384), (976, 29615), (1220, 23692), (2440, 11846), (4880, 5923)]