81758040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7487}}^1$

素因数の和:7521

約数の個数: 128

約数和(自身を含む): 301916160

約数和(自身を除く): 220158120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2730, 3640, 5460, 7487, 10920, 14974, 22461, 29948, 37435, 44922, 52409, 59896, 74870, 89844, 97331, 104818, 112305, 149740, 157227, 179688, 194662, 209636, 224610, 262045, 291993, 299480, 314454, 389324, 419272, 449220, 486655, 524090, 583986, 628908, 681317, 778648, 786135, 898440, 973310, 1048180, 1167972, 1257816, 1362634, 1459965, 1572270, 1946620, 2043951, 2096360, 2335944, 2725268, 2919930, 3144540, 3406585, 3893240, 4087902, 5450536, 5839860, 6289080, 6813170, 8175804, 10219755, 11679720, 13626340, 16351608, 20439510, 27252680, 40879020, 81758040]

約数ペア:

[(1, 81758040), (2, 40879020), (3, 27252680), (4, 20439510), (5, 16351608), (6, 13626340), (7, 11679720), (8, 10219755), (10, 8175804), (12, 6813170), (13, 6289080), (14, 5839860), (15, 5450536), (20, 4087902), (21, 3893240), (24, 3406585), (26, 3144540), (28, 2919930), (30, 2725268), (35, 2335944), (39, 2096360), (40, 2043951), (42, 1946620), (52, 1572270), (56, 1459965), (60, 1362634), (65, 1257816), (70, 1167972), (78, 1048180), (84, 973310), (91, 898440), (104, 786135), (105, 778648), (120, 681317), (130, 628908), (140, 583986), (156, 524090), (168, 486655), (182, 449220), (195, 419272), (210, 389324), (260, 314454), (273, 299480), (280, 291993), (312, 262045), (364, 224610), (390, 209636), (420, 194662), (455, 179688), (520, 157227), (546, 149740), (728, 112305), (780, 104818), (840, 97331), (910, 89844), (1092, 74870), (1365, 59896), (1560, 52409), (1820, 44922), (2184, 37435), (2730, 29948), (3640, 22461), (5460, 14974), (7487, 10920)]