31190020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{389}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 69451200

約数和(自身を除く): 38261180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 211, 380, 389, 422, 778, 844, 1055, 1556, 1945, 2110, 3890, 4009, 4220, 7391, 7780, 8018, 14782, 16036, 20045, 29564, 36955, 40090, 73910, 80180, 82079, 147820, 164158, 328316, 410395, 820790, 1559501, 1641580, 3119002, 6238004, 7797505, 15595010, 31190020]

約数ペア:

[(1, 31190020), (2, 15595010), (4, 7797505), (5, 6238004), (10, 3119002), (19, 1641580), (20, 1559501), (38, 820790), (76, 410395), (95, 328316), (190, 164158), (211, 147820), (380, 82079), (389, 80180), (422, 73910), (778, 40090), (844, 36955), (1055, 29564), (1556, 20045), (1945, 16036), (2110, 14782), (3890, 8018), (4009, 7780), (4220, 7391)]