15123920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:372

約数の個数: 80

約数和(自身を含む): 40711680

約数和(自身を除く): 25587760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 113, 140, 226, 239, 280, 452, 478, 560, 565, 791, 904, 956, 1130, 1195, 1582, 1673, 1808, 1912, 2260, 2390, 3164, 3346, 3824, 3955, 4520, 4780, 6328, 6692, 7910, 8365, 9040, 9560, 12656, 13384, 15820, 16730, 19120, 26768, 27007, 31640, 33460, 54014, 63280, 66920, 108028, 133840, 135035, 189049, 216056, 270070, 378098, 432112, 540140, 756196, 945245, 1080280, 1512392, 1890490, 2160560, 3024784, 3780980, 7561960, 15123920]

約数ペア:

[(1, 15123920), (2, 7561960), (4, 3780980), (5, 3024784), (7, 2160560), (8, 1890490), (10, 1512392), (14, 1080280), (16, 945245), (20, 756196), (28, 540140), (35, 432112), (40, 378098), (56, 270070), (70, 216056), (80, 189049), (112, 135035), (113, 133840), (140, 108028), (226, 66920), (239, 63280), (280, 54014), (452, 33460), (478, 31640), (560, 27007), (565, 26768), (791, 19120), (904, 16730), (956, 15820), (1130, 13384), (1195, 12656), (1582, 9560), (1673, 9040), (1808, 8365), (1912, 7910), (2260, 6692), (2390, 6328), (3164, 4780), (3346, 4520), (3824, 3955)]