199179640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:305

約数の個数: 128

約数和(自身を含む): 511842240

約数和(自身を除く): 312662600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 61, 82, 88, 110, 122, 164, 181, 205, 220, 244, 305, 328, 362, 410, 440, 451, 488, 610, 671, 724, 820, 902, 905, 1220, 1342, 1448, 1640, 1804, 1810, 1991, 2255, 2440, 2501, 2684, 3355, 3608, 3620, 3982, 4510, 5002, 5368, 6710, 7240, 7421, 7964, 9020, 9955, 10004, 11041, 12505, 13420, 14842, 15928, 18040, 19910, 20008, 22082, 25010, 26840, 27511, 29684, 37105, 39820, 44164, 50020, 55022, 55205, 59368, 74210, 79640, 81631, 88328, 100040, 110044, 110410, 121451, 137555, 148420, 163262, 220088, 220820, 242902, 275110, 296840, 326524, 408155, 441640, 452681, 485804, 550220, 607255, 653048, 816310, 905362, 971608, 1100440, 1214510, 1632620, 1810724, 2263405, 2429020, 3265240, 3621448, 4526810, 4858040, 4979491, 9053620, 9958982, 18107240, 19917964, 24897455, 39835928, 49794910, 99589820, 199179640]

約数ペア:

[(1, 199179640), (2, 99589820), (4, 49794910), (5, 39835928), (8, 24897455), (10, 19917964), (11, 18107240), (20, 9958982), (22, 9053620), (40, 4979491), (41, 4858040), (44, 4526810), (55, 3621448), (61, 3265240), (82, 2429020), (88, 2263405), (110, 1810724), (122, 1632620), (164, 1214510), (181, 1100440), (205, 971608), (220, 905362), (244, 816310), (305, 653048), (328, 607255), (362, 550220), (410, 485804), (440, 452681), (451, 441640), (488, 408155), (610, 326524), (671, 296840), (724, 275110), (820, 242902), (902, 220820), (905, 220088), (1220, 163262), (1342, 148420), (1448, 137555), (1640, 121451), (1804, 110410), (1810, 110044), (1991, 100040), (2255, 88328), (2440, 81631), (2501, 79640), (2684, 74210), (3355, 59368), (3608, 55205), (3620, 55022), (3982, 50020), (4510, 44164), (5002, 39820), (5368, 37105), (6710, 29684), (7240, 27511), (7421, 26840), (7964, 25010), (9020, 22082), (9955, 20008), (10004, 19910), (11041, 18040), (12505, 15928), (13420, 14842)]