19914440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5471}}^1$

素因数の和:5502

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 35243320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5471, 10942, 21884, 27355, 38297, 43768, 54710, 71123, 76594, 109420, 142246, 153188, 191485, 218840, 284492, 306376, 355615, 382970, 497861, 568984, 711230, 765940, 995722, 1422460, 1531880, 1991444, 2489305, 2844920, 3982888, 4978610, 9957220, 19914440]

約数ペア:

[(1, 19914440), (2, 9957220), (4, 4978610), (5, 3982888), (7, 2844920), (8, 2489305), (10, 1991444), (13, 1531880), (14, 1422460), (20, 995722), (26, 765940), (28, 711230), (35, 568984), (40, 497861), (52, 382970), (56, 355615), (65, 306376), (70, 284492), (91, 218840), (104, 191485), (130, 153188), (140, 142246), (182, 109420), (260, 76594), (280, 71123), (364, 54710), (455, 43768), (520, 38297), (728, 27355), (910, 21884), (1820, 10942), (3640, 5471)]