71445140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2521}}^1$

素因数の和:2652

約数の個数: 48

約数和(自身を含む): 163122960

約数和(自身を除く): 91677820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1417, 2180, 2521, 2834, 5042, 5668, 7085, 10084, 12605, 14170, 25210, 28340, 32773, 50420, 65546, 131092, 163865, 274789, 327730, 549578, 655460, 1099156, 1373945, 2747890, 3572257, 5495780, 7144514, 14289028, 17861285, 35722570, 71445140]

約数ペア:

[(1, 71445140), (2, 35722570), (4, 17861285), (5, 14289028), (10, 7144514), (13, 5495780), (20, 3572257), (26, 2747890), (52, 1373945), (65, 1099156), (109, 655460), (130, 549578), (218, 327730), (260, 274789), (436, 163865), (545, 131092), (1090, 65546), (1417, 50420), (2180, 32773), (2521, 28340), (2834, 25210), (5042, 14170), (5668, 12605), (7085, 10084)]