28028280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{547}}^1$

素因数の和:629

約数の個数: 128

約数和(自身を含む): 97850880

約数和(自身を除く): 69822600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 61, 70, 84, 105, 120, 122, 140, 168, 183, 210, 244, 280, 305, 366, 420, 427, 488, 547, 610, 732, 840, 854, 915, 1094, 1220, 1281, 1464, 1641, 1708, 1830, 2135, 2188, 2440, 2562, 2735, 3282, 3416, 3660, 3829, 4270, 4376, 5124, 5470, 6405, 6564, 7320, 7658, 8205, 8540, 10248, 10940, 11487, 12810, 13128, 15316, 16410, 17080, 19145, 21880, 22974, 25620, 30632, 32820, 33367, 38290, 45948, 51240, 57435, 65640, 66734, 76580, 91896, 100101, 114870, 133468, 153160, 166835, 200202, 229740, 233569, 266936, 333670, 400404, 459480, 467138, 500505, 667340, 700707, 800808, 934276, 1001010, 1167845, 1334680, 1401414, 1868552, 2002020, 2335690, 2802828, 3503535, 4004040, 4671380, 5605656, 7007070, 9342760, 14014140, 28028280]

約数ペア:

[(1, 28028280), (2, 14014140), (3, 9342760), (4, 7007070), (5, 5605656), (6, 4671380), (7, 4004040), (8, 3503535), (10, 2802828), (12, 2335690), (14, 2002020), (15, 1868552), (20, 1401414), (21, 1334680), (24, 1167845), (28, 1001010), (30, 934276), (35, 800808), (40, 700707), (42, 667340), (56, 500505), (60, 467138), (61, 459480), (70, 400404), (84, 333670), (105, 266936), (120, 233569), (122, 229740), (140, 200202), (168, 166835), (183, 153160), (210, 133468), (244, 114870), (280, 100101), (305, 91896), (366, 76580), (420, 66734), (427, 65640), (488, 57435), (547, 51240), (610, 45948), (732, 38290), (840, 33367), (854, 32820), (915, 30632), (1094, 25620), (1220, 22974), (1281, 21880), (1464, 19145), (1641, 17080), (1708, 16410), (1830, 15316), (2135, 13128), (2188, 12810), (2440, 11487), (2562, 10940), (2735, 10248), (3282, 8540), (3416, 8205), (3660, 7658), (3829, 7320), (4270, 6564), (4376, 6405), (5124, 5470)]