21713020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{5003}}^1$

素因数の和:5050

約数の個数: 48

約数和(自身を含む): 53803008

約数和(自身を除く): 32089988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 5003, 10006, 20012, 25015, 35021, 50030, 70042, 100060, 140084, 155093, 175105, 310186, 350210, 620372, 700420, 775465, 1085651, 1550930, 2171302, 3101860, 4342604, 5428255, 10856510, 21713020]

約数ペア:

[(1, 21713020), (2, 10856510), (4, 5428255), (5, 4342604), (7, 3101860), (10, 2171302), (14, 1550930), (20, 1085651), (28, 775465), (31, 700420), (35, 620372), (62, 350210), (70, 310186), (124, 175105), (140, 155093), (155, 140084), (217, 100060), (310, 70042), (434, 50030), (620, 35021), (868, 25015), (1085, 20012), (2170, 10006), (4340, 5003)]