12712940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 28576800

約数和(自身を除く): 15863860

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 139, 170, 269, 278, 340, 538, 556, 695, 1076, 1345, 1390, 2363, 2690, 2780, 4573, 4726, 5380, 9146, 9452, 11815, 18292, 22865, 23630, 37391, 45730, 47260, 74782, 91460, 149564, 186955, 373910, 635647, 747820, 1271294, 2542588, 3178235, 6356470, 12712940]

約数ペア:

[(1, 12712940), (2, 6356470), (4, 3178235), (5, 2542588), (10, 1271294), (17, 747820), (20, 635647), (34, 373910), (68, 186955), (85, 149564), (139, 91460), (170, 74782), (269, 47260), (278, 45730), (340, 37391), (538, 23630), (556, 22865), (695, 18292), (1076, 11815), (1345, 9452), (1390, 9146), (2363, 5380), (2690, 4726), (2780, 4573)]