207781520

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89561}}^1$

素因数の和:89603

約数の個数: 40

約数和(自身を含む): 499755960

約数和(自身を除く): 291974440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 89561, 179122, 358244, 447805, 716488, 895610, 1432976, 1791220, 2597269, 3582440, 5194538, 7164880, 10389076, 12986345, 20778152, 25972690, 41556304, 51945380, 103890760, 207781520]

約数ペア:

[(1, 207781520), (2, 103890760), (4, 51945380), (5, 41556304), (8, 25972690), (10, 20778152), (16, 12986345), (20, 10389076), (29, 7164880), (40, 5194538), (58, 3582440), (80, 2597269), (116, 1791220), (145, 1432976), (232, 895610), (290, 716488), (464, 447805), (580, 358244), (1160, 179122), (2320, 89561)]