78865420

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1\times {\mathrm{269}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 169011360

約数和(自身を除く): 90145940

約数列:

[1, 2, 4, 5, 10, 20, 107, 137, 214, 269, 274, 428, 535, 538, 548, 685, 1070, 1076, 1345, 1370, 2140, 2690, 2740, 5380, 14659, 28783, 29318, 36853, 57566, 58636, 73295, 73706, 115132, 143915, 146590, 147412, 184265, 287830, 293180, 368530, 575660, 737060, 3943271, 7886542, 15773084, 19716355, 39432710, 78865420]

約数ペア:

[(1, 78865420), (2, 39432710), (4, 19716355), (5, 15773084), (10, 7886542), (20, 3943271), (107, 737060), (137, 575660), (214, 368530), (269, 293180), (274, 287830), (428, 184265), (535, 147412), (538, 146590), (548, 143915), (685, 115132), (1070, 73706), (1076, 73295), (1345, 58636), (1370, 57566), (2140, 36853), (2690, 29318), (2740, 28783), (5380, 14659)]