15291220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{457}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 36933120

約数和(自身を除く): 21641900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 457, 478, 914, 956, 1195, 1673, 1828, 2285, 2390, 3199, 3346, 4570, 4780, 6398, 6692, 8365, 9140, 12796, 15995, 16730, 31990, 33460, 63980, 109223, 218446, 436892, 546115, 764561, 1092230, 1529122, 2184460, 3058244, 3822805, 7645610, 15291220]

約数ペア:

[(1, 15291220), (2, 7645610), (4, 3822805), (5, 3058244), (7, 2184460), (10, 1529122), (14, 1092230), (20, 764561), (28, 546115), (35, 436892), (70, 218446), (140, 109223), (239, 63980), (457, 33460), (478, 31990), (914, 16730), (956, 15995), (1195, 12796), (1673, 9140), (1828, 8365), (2285, 6692), (2390, 6398), (3199, 4780), (3346, 4570)]