257858580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{229}}^1\times {\mathrm{383}}^1$

素因数の和:638

約数の個数: 144

約数和(自身を含む): 845752320

約数和(自身を除く): 587893740

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 229, 245, 294, 383, 420, 458, 490, 588, 687, 735, 766, 916, 980, 1145, 1149, 1374, 1470, 1532, 1603, 1915, 2290, 2298, 2681, 2748, 2940, 3206, 3435, 3830, 4580, 4596, 4809, 5362, 5745, 6412, 6870, 7660, 8015, 8043, 9618, 10724, 11221, 11490, 13405, 13740, 16030, 16086, 18767, 19236, 22442, 22980, 24045, 26810, 32060, 32172, 33663, 37534, 40215, 44884, 48090, 53620, 56105, 56301, 67326, 75068, 80430, 87707, 93835, 96180, 112210, 112602, 134652, 160860, 168315, 175414, 187670, 224420, 225204, 263121, 281505, 336630, 350828, 375340, 438535, 526242, 563010, 613949, 673260, 877070, 1052484, 1126020, 1227898, 1315605, 1754140, 1841847, 2455796, 2631210, 3069745, 3683694, 4297643, 5262420, 6139490, 7367388, 8595286, 9209235, 12278980, 12892929, 17190572, 18418470, 21488215, 25785858, 36836940, 42976430, 51571716, 64464645, 85952860, 128929290, 257858580]

約数ペア:

[(1, 257858580), (2, 128929290), (3, 85952860), (4, 64464645), (5, 51571716), (6, 42976430), (7, 36836940), (10, 25785858), (12, 21488215), (14, 18418470), (15, 17190572), (20, 12892929), (21, 12278980), (28, 9209235), (30, 8595286), (35, 7367388), (42, 6139490), (49, 5262420), (60, 4297643), (70, 3683694), (84, 3069745), (98, 2631210), (105, 2455796), (140, 1841847), (147, 1754140), (196, 1315605), (210, 1227898), (229, 1126020), (245, 1052484), (294, 877070), (383, 673260), (420, 613949), (458, 563010), (490, 526242), (588, 438535), (687, 375340), (735, 350828), (766, 336630), (916, 281505), (980, 263121), (1145, 225204), (1149, 224420), (1374, 187670), (1470, 175414), (1532, 168315), (1603, 160860), (1915, 134652), (2290, 112602), (2298, 112210), (2681, 96180), (2748, 93835), (2940, 87707), (3206, 80430), (3435, 75068), (3830, 67326), (4580, 56301), (4596, 56105), (4809, 53620), (5362, 48090), (5745, 44884), (6412, 40215), (6870, 37534), (7660, 33663), (8015, 32172), (8043, 32060), (9618, 26810), (10724, 24045), (11221, 22980), (11490, 22442), (13405, 19236), (13740, 18767), (16030, 16086)]