20791155

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{383}}^1$

素因数の和:456

約数の個数: 64

約数和(自身を含む): 42467328

約数和(自身を除く): 21676173

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 47, 55, 77, 105, 141, 165, 231, 235, 329, 383, 385, 517, 705, 987, 1149, 1155, 1551, 1645, 1915, 2585, 2681, 3619, 4213, 4935, 5745, 7755, 8043, 10857, 12639, 13405, 18001, 18095, 21065, 29491, 40215, 54003, 54285, 63195, 88473, 90005, 126007, 147455, 198011, 270015, 378021, 442365, 594033, 630035, 990055, 1386077, 1890105, 2970165, 4158231, 6930385, 20791155]

約数ペア:

[(1, 20791155), (3, 6930385), (5, 4158231), (7, 2970165), (11, 1890105), (15, 1386077), (21, 990055), (33, 630035), (35, 594033), (47, 442365), (55, 378021), (77, 270015), (105, 198011), (141, 147455), (165, 126007), (231, 90005), (235, 88473), (329, 63195), (383, 54285), (385, 54003), (517, 40215), (705, 29491), (987, 21065), (1149, 18095), (1155, 18001), (1551, 13405), (1645, 12639), (1915, 10857), (2585, 8043), (2681, 7755), (3619, 5745), (4213, 4935)]