19891040

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:232

約数の個数: 96

約数和(自身を含む): 51692256

約数和(自身を除く): 31801216

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 73, 80, 104, 130, 131, 146, 160, 208, 260, 262, 292, 365, 416, 520, 524, 584, 655, 730, 949, 1040, 1048, 1168, 1310, 1460, 1703, 1898, 2080, 2096, 2336, 2620, 2920, 3406, 3796, 4192, 4745, 5240, 5840, 6812, 7592, 8515, 9490, 9563, 10480, 11680, 13624, 15184, 17030, 18980, 19126, 20960, 27248, 30368, 34060, 37960, 38252, 47815, 54496, 68120, 75920, 76504, 95630, 124319, 136240, 151840, 153008, 191260, 248638, 272480, 306016, 382520, 497276, 621595, 765040, 994552, 1243190, 1530080, 1989104, 2486380, 3978208, 4972760, 9945520, 19891040]

約数ペア:

[(1, 19891040), (2, 9945520), (4, 4972760), (5, 3978208), (8, 2486380), (10, 1989104), (13, 1530080), (16, 1243190), (20, 994552), (26, 765040), (32, 621595), (40, 497276), (52, 382520), (65, 306016), (73, 272480), (80, 248638), (104, 191260), (130, 153008), (131, 151840), (146, 136240), (160, 124319), (208, 95630), (260, 76504), (262, 75920), (292, 68120), (365, 54496), (416, 47815), (520, 38252), (524, 37960), (584, 34060), (655, 30368), (730, 27248), (949, 20960), (1040, 19126), (1048, 18980), (1168, 17030), (1310, 15184), (1460, 13624), (1703, 11680), (1898, 10480), (2080, 9563), (2096, 9490), (2336, 8515), (2620, 7592), (2920, 6812), (3406, 5840), (3796, 5240), (4192, 4745)]