12705680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1$

素因数の和:688

約数の個数: 80

約数和(自身を含む): 33539520

約数和(自身を除く): 20833840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 643, 760, 988, 1040, 1235, 1286, 1520, 1976, 2470, 2572, 3215, 3952, 4940, 5144, 6430, 8359, 9880, 10288, 12217, 12860, 16718, 19760, 24434, 25720, 33436, 41795, 48868, 51440, 61085, 66872, 83590, 97736, 122170, 133744, 158821, 167180, 195472, 244340, 317642, 334360, 488680, 635284, 668720, 794105, 977360, 1270568, 1588210, 2541136, 3176420, 6352840, 12705680]

約数ペア:

[(1, 12705680), (2, 6352840), (4, 3176420), (5, 2541136), (8, 1588210), (10, 1270568), (13, 977360), (16, 794105), (19, 668720), (20, 635284), (26, 488680), (38, 334360), (40, 317642), (52, 244340), (65, 195472), (76, 167180), (80, 158821), (95, 133744), (104, 122170), (130, 97736), (152, 83590), (190, 66872), (208, 61085), (247, 51440), (260, 48868), (304, 41795), (380, 33436), (494, 25720), (520, 24434), (643, 19760), (760, 16718), (988, 12860), (1040, 12217), (1235, 10288), (1286, 9880), (1520, 8359), (1976, 6430), (2470, 5144), (2572, 4940), (3215, 3952)]