20744080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2179}}^1$

素因数の和:2216

約数の個数: 80

約数和(自身を含む): 58389120

約数和(自身を除く): 37645040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2179, 2380, 4358, 4760, 8716, 9520, 10895, 15253, 17432, 21790, 30506, 34864, 37043, 43580, 61012, 74086, 76265, 87160, 122024, 148172, 152530, 174320, 185215, 244048, 259301, 296344, 305060, 370430, 518602, 592688, 610120, 740860, 1037204, 1220240, 1296505, 1481720, 2074408, 2593010, 2963440, 4148816, 5186020, 10372040, 20744080]

約数ペア:

[(1, 20744080), (2, 10372040), (4, 5186020), (5, 4148816), (7, 2963440), (8, 2593010), (10, 2074408), (14, 1481720), (16, 1296505), (17, 1220240), (20, 1037204), (28, 740860), (34, 610120), (35, 592688), (40, 518602), (56, 370430), (68, 305060), (70, 296344), (80, 259301), (85, 244048), (112, 185215), (119, 174320), (136, 152530), (140, 148172), (170, 122024), (238, 87160), (272, 76265), (280, 74086), (340, 61012), (476, 43580), (560, 37043), (595, 34864), (680, 30506), (952, 21790), (1190, 17432), (1360, 15253), (1904, 10895), (2179, 9520), (2380, 8716), (4358, 4760)]