9521980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{691}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 21972384

約数和(自身を除く): 12450404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 691, 1060, 1378, 1382, 2756, 2764, 3445, 3455, 6890, 6910, 8983, 13780, 13820, 17966, 35932, 36623, 44915, 73246, 89830, 146492, 179660, 183115, 366230, 476099, 732460, 952198, 1904396, 2380495, 4760990, 9521980]

約数ペア:

[(1, 9521980), (2, 4760990), (4, 2380495), (5, 1904396), (10, 952198), (13, 732460), (20, 476099), (26, 366230), (52, 183115), (53, 179660), (65, 146492), (106, 89830), (130, 73246), (212, 44915), (260, 36623), (265, 35932), (530, 17966), (689, 13820), (691, 13780), (1060, 8983), (1378, 6910), (1382, 6890), (2756, 3455), (2764, 3445)]