256141280

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{773}}^1$

素因数の和:916

約数の個数: 96

約数和(自身を含む): 643658400

約数和(自身を除く): 387517120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 109, 152, 160, 190, 218, 304, 380, 436, 545, 608, 760, 773, 872, 1090, 1520, 1546, 1744, 2071, 2180, 3040, 3092, 3488, 3865, 4142, 4360, 6184, 7730, 8284, 8720, 10355, 12368, 14687, 15460, 16568, 17440, 20710, 24736, 29374, 30920, 33136, 41420, 58748, 61840, 66272, 73435, 82840, 84257, 117496, 123680, 146870, 165680, 168514, 234992, 293740, 331360, 337028, 421285, 469984, 587480, 674056, 842570, 1174960, 1348112, 1600883, 1685140, 2349920, 2696224, 3201766, 3370280, 6403532, 6740560, 8004415, 12807064, 13481120, 16008830, 25614128, 32017660, 51228256, 64035320, 128070640, 256141280]

約数ペア:

[(1, 256141280), (2, 128070640), (4, 64035320), (5, 51228256), (8, 32017660), (10, 25614128), (16, 16008830), (19, 13481120), (20, 12807064), (32, 8004415), (38, 6740560), (40, 6403532), (76, 3370280), (80, 3201766), (95, 2696224), (109, 2349920), (152, 1685140), (160, 1600883), (190, 1348112), (218, 1174960), (304, 842570), (380, 674056), (436, 587480), (545, 469984), (608, 421285), (760, 337028), (773, 331360), (872, 293740), (1090, 234992), (1520, 168514), (1546, 165680), (1744, 146870), (2071, 123680), (2180, 117496), (3040, 84257), (3092, 82840), (3488, 73435), (3865, 66272), (4142, 61840), (4360, 58748), (6184, 41420), (7730, 33136), (8284, 30920), (8720, 29374), (10355, 24736), (12368, 20710), (14687, 17440), (15460, 16568)]