2891550640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{20929}}^1$

素因数の和:21110

約数の個数: 80

約数和(自身を含む): 7381090080

約数和(自身を除く): 4489539440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 157, 176, 220, 314, 440, 628, 785, 880, 1256, 1570, 1727, 2512, 3140, 3454, 6280, 6908, 8635, 12560, 13816, 17270, 20929, 27632, 34540, 41858, 69080, 83716, 104645, 138160, 167432, 209290, 230219, 334864, 418580, 460438, 837160, 920876, 1151095, 1674320, 1841752, 2302190, 3285853, 3683504, 4604380, 6571706, 9208760, 13143412, 16429265, 18417520, 26286824, 32858530, 36144383, 52573648, 65717060, 72288766, 131434120, 144577532, 180721915, 262868240, 289155064, 361443830, 578310128, 722887660, 1445775320, 2891550640]

約数ペア:

[(1, 2891550640), (2, 1445775320), (4, 722887660), (5, 578310128), (8, 361443830), (10, 289155064), (11, 262868240), (16, 180721915), (20, 144577532), (22, 131434120), (40, 72288766), (44, 65717060), (55, 52573648), (80, 36144383), (88, 32858530), (110, 26286824), (157, 18417520), (176, 16429265), (220, 13143412), (314, 9208760), (440, 6571706), (628, 4604380), (785, 3683504), (880, 3285853), (1256, 2302190), (1570, 1841752), (1727, 1674320), (2512, 1151095), (3140, 920876), (3454, 837160), (6280, 460438), (6908, 418580), (8635, 334864), (12560, 230219), (13816, 209290), (17270, 167432), (20929, 138160), (27632, 104645), (34540, 83716), (41858, 69080)]