2019955990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{212851}}^1$

素因数の和:212944

約数の個数: 32

約数和(自身を含む): 3969264096

約数和(自身を除く): 1949308106

約数列:

[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 365, 730, 949, 1898, 4745, 9490, 212851, 425702, 1064255, 2128510, 2767063, 5534126, 13835315, 15538123, 27670630, 31076246, 77690615, 155381230, 201995599, 403991198, 1009977995, 2019955990]

約数ペア:

[(1, 2019955990), (2, 1009977995), (5, 403991198), (10, 201995599), (13, 155381230), (26, 77690615), (65, 31076246), (73, 27670630), (130, 15538123), (146, 13835315), (365, 5534126), (730, 2767063), (949, 2128510), (1898, 1064255), (4745, 425702), (9490, 212851)]