18880974736

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{1013}}^1$

素因数の和:1221

約数の個数: 120

約数和(自身を含む): 40658118696

約数和(自身を除く): 21777143960

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 113, 122, 169, 208, 226, 244, 338, 452, 488, 676, 793, 904, 976, 1013, 1352, 1469, 1586, 1808, 2026, 2704, 2938, 3172, 4052, 5876, 6344, 6893, 8104, 10309, 11752, 12688, 13169, 13786, 16208, 19097, 20618, 23504, 26338, 27572, 38194, 41236, 52676, 55144, 61793, 76388, 82472, 89609, 105352, 110288, 114469, 123586, 152776, 164944, 171197, 179218, 210704, 228938, 247172, 305552, 342394, 358436, 457876, 494344, 684788, 716872, 803309, 915752, 988688, 1164917, 1369576, 1433744, 1488097, 1606618, 1831504, 2329834, 2739152, 2976194, 3213236, 4659668, 5952388, 6426472, 6982609, 9319336, 10443017, 11904776, 12852944, 13965218, 18638672, 19345261, 20886034, 23809552, 27930436, 38690522, 41772068, 55860872, 77381044, 83544136, 90773917, 111721744, 154762088, 167088272, 181547834, 309524176, 363095668, 726191336, 1180060921, 1452382672, 2360121842, 4720243684, 9440487368, 18880974736]

約数ペア:

[(1, 18880974736), (2, 9440487368), (4, 4720243684), (8, 2360121842), (13, 1452382672), (16, 1180060921), (26, 726191336), (52, 363095668), (61, 309524176), (104, 181547834), (113, 167088272), (122, 154762088), (169, 111721744), (208, 90773917), (226, 83544136), (244, 77381044), (338, 55860872), (452, 41772068), (488, 38690522), (676, 27930436), (793, 23809552), (904, 20886034), (976, 19345261), (1013, 18638672), (1352, 13965218), (1469, 12852944), (1586, 11904776), (1808, 10443017), (2026, 9319336), (2704, 6982609), (2938, 6426472), (3172, 5952388), (4052, 4659668), (5876, 3213236), (6344, 2976194), (6893, 2739152), (8104, 2329834), (10309, 1831504), (11752, 1606618), (12688, 1488097), (13169, 1433744), (13786, 1369576), (16208, 1164917), (19097, 988688), (20618, 915752), (23504, 803309), (26338, 716872), (27572, 684788), (38194, 494344), (41236, 457876), (52676, 358436), (55144, 342394), (61793, 305552), (76388, 247172), (82472, 228938), (89609, 210704), (105352, 179218), (110288, 171197), (114469, 164944), (123586, 152776)]