19678928

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1019}}^1$

素因数の和:1115

約数の個数: 40

約数和(自身を含む): 40979520

約数和(自身を除く): 21300592

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 71, 136, 142, 272, 284, 568, 1019, 1136, 1207, 2038, 2414, 4076, 4828, 8152, 9656, 16304, 17323, 19312, 34646, 69292, 72349, 138584, 144698, 277168, 289396, 578792, 1157584, 1229933, 2459866, 4919732, 9839464, 19678928]

約数ペア:

[(1, 19678928), (2, 9839464), (4, 4919732), (8, 2459866), (16, 1229933), (17, 1157584), (34, 578792), (68, 289396), (71, 277168), (136, 144698), (142, 138584), (272, 72349), (284, 69292), (568, 34646), (1019, 19312), (1136, 17323), (1207, 16304), (2038, 9656), (2414, 8152), (4076, 4828)]