17920840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2207}}^1$

素因数の和:2254

約数の個数: 64

約数和(自身を含む): 47692800

約数和(自身を除く): 29771960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2207, 4060, 4414, 8120, 8828, 11035, 15449, 17656, 22070, 30898, 44140, 61796, 64003, 77245, 88280, 123592, 128006, 154490, 256012, 308980, 320015, 448021, 512024, 617960, 640030, 896042, 1280060, 1792084, 2240105, 2560120, 3584168, 4480210, 8960420, 17920840]

約数ペア:

[(1, 17920840), (2, 8960420), (4, 4480210), (5, 3584168), (7, 2560120), (8, 2240105), (10, 1792084), (14, 1280060), (20, 896042), (28, 640030), (29, 617960), (35, 512024), (40, 448021), (56, 320015), (58, 308980), (70, 256012), (116, 154490), (140, 128006), (145, 123592), (203, 88280), (232, 77245), (280, 64003), (290, 61796), (406, 44140), (580, 30898), (812, 22070), (1015, 17656), (1160, 15449), (1624, 11035), (2030, 8828), (2207, 8120), (4060, 4414)]