1640129380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1\times {\mathrm{3671}}^1$

素因数の和:4020

約数の個数: 48

約数和(自身を含む): 3497800320

約数和(自身を除く): 1857670940

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 251, 356, 445, 502, 890, 1004, 1255, 1780, 2510, 3671, 5020, 7342, 14684, 18355, 22339, 36710, 44678, 73420, 89356, 111695, 223390, 326719, 446780, 653438, 921421, 1306876, 1633595, 1842842, 3267190, 3685684, 4607105, 6534380, 9214210, 18428420, 82006469, 164012938, 328025876, 410032345, 820064690, 1640129380]

約数ペア:

[(1, 1640129380), (2, 820064690), (4, 410032345), (5, 328025876), (10, 164012938), (20, 82006469), (89, 18428420), (178, 9214210), (251, 6534380), (356, 4607105), (445, 3685684), (502, 3267190), (890, 1842842), (1004, 1633595), (1255, 1306876), (1780, 921421), (2510, 653438), (3671, 446780), (5020, 326719), (7342, 223390), (14684, 111695), (18355, 89356), (22339, 73420), (36710, 44678)]