20492990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{1013}}^1$

素因数の和:1061

約数の個数: 48

約数和(自身を含む): 44826912

約数和(自身を除く): 24333922

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 170, 238, 289, 578, 595, 1013, 1190, 1445, 2023, 2026, 2890, 4046, 5065, 7091, 10115, 10130, 14182, 17221, 20230, 34442, 35455, 70910, 86105, 120547, 172210, 241094, 292757, 585514, 602735, 1205470, 1463785, 2049299, 2927570, 4098598, 10246495, 20492990]

約数ペア:

[(1, 20492990), (2, 10246495), (5, 4098598), (7, 2927570), (10, 2049299), (14, 1463785), (17, 1205470), (34, 602735), (35, 585514), (70, 292757), (85, 241094), (119, 172210), (170, 120547), (238, 86105), (289, 70910), (578, 35455), (595, 34442), (1013, 20230), (1190, 17221), (1445, 14182), (2023, 10130), (2026, 10115), (2890, 7091), (4046, 5065)]