9721660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 22226400

約数和(自身を除く): 12504740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 269, 278, 538, 556, 695, 1076, 1345, 1390, 1807, 2690, 2780, 3497, 3614, 5380, 6994, 7228, 9035, 13988, 17485, 18070, 34970, 36140, 37391, 69940, 74782, 149564, 186955, 373910, 486083, 747820, 972166, 1944332, 2430415, 4860830, 9721660]

約数ペア:

[(1, 9721660), (2, 4860830), (4, 2430415), (5, 1944332), (10, 972166), (13, 747820), (20, 486083), (26, 373910), (52, 186955), (65, 149564), (130, 74782), (139, 69940), (260, 37391), (269, 36140), (278, 34970), (538, 18070), (556, 17485), (695, 13988), (1076, 9035), (1345, 7228), (1390, 6994), (1807, 5380), (2690, 3614), (2780, 3497)]