28935140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1021}}^1$

素因数の和:1152

約数の個数: 48

約数和(自身を含む): 66102960

約数和(自身を除く): 37167820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1021, 1090, 1417, 2042, 2180, 2834, 4084, 5105, 5668, 7085, 10210, 13273, 14170, 20420, 26546, 28340, 53092, 66365, 111289, 132730, 222578, 265460, 445156, 556445, 1112890, 1446757, 2225780, 2893514, 5787028, 7233785, 14467570, 28935140]

約数ペア:

[(1, 28935140), (2, 14467570), (4, 7233785), (5, 5787028), (10, 2893514), (13, 2225780), (20, 1446757), (26, 1112890), (52, 556445), (65, 445156), (109, 265460), (130, 222578), (218, 132730), (260, 111289), (436, 66365), (545, 53092), (1021, 28340), (1090, 26546), (1417, 20420), (2042, 14170), (2180, 13273), (2834, 10210), (4084, 7085), (5105, 5668)]