20573150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1021}}^1$

素因数の和:1077

約数の個数: 48

約数和(自身を含む): 42580608

約数和(自身を除く): 22007458

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1021, 1550, 2015, 2042, 4030, 5105, 10075, 10210, 13273, 20150, 25525, 26546, 31651, 51050, 63302, 66365, 132730, 158255, 316510, 331825, 411463, 663650, 791275, 822926, 1582550, 2057315, 4114630, 10286575, 20573150]

約数ペア:

[(1, 20573150), (2, 10286575), (5, 4114630), (10, 2057315), (13, 1582550), (25, 822926), (26, 791275), (31, 663650), (50, 411463), (62, 331825), (65, 316510), (130, 158255), (155, 132730), (310, 66365), (325, 63302), (403, 51050), (650, 31651), (775, 26546), (806, 25525), (1021, 20150), (1550, 13273), (2015, 10210), (2042, 10075), (4030, 5105)]