12530020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{269}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 28168560

約数和(自身を除く): 15638540

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 137, 170, 269, 274, 340, 538, 548, 685, 1076, 1345, 1370, 2329, 2690, 2740, 4573, 4658, 5380, 9146, 9316, 11645, 18292, 22865, 23290, 36853, 45730, 46580, 73706, 91460, 147412, 184265, 368530, 626501, 737060, 1253002, 2506004, 3132505, 6265010, 12530020]

約数ペア:

[(1, 12530020), (2, 6265010), (4, 3132505), (5, 2506004), (10, 1253002), (17, 737060), (20, 626501), (34, 368530), (68, 184265), (85, 147412), (137, 91460), (170, 73706), (269, 46580), (274, 45730), (340, 36853), (538, 23290), (548, 22865), (685, 18292), (1076, 11645), (1345, 9316), (1370, 9146), (2329, 5380), (2690, 4658), (2740, 4573)]