19978416

素因数分解:

$2^4\times 3^2\times {\mathrm{138739}}^1$

素因数の和:138753

約数の個数: 30

約数和(自身を含む): 55912220

約数和(自身を除く): 35933804

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 138739, 277478, 416217, 554956, 832434, 1109912, 1248651, 1664868, 2219824, 2497302, 3329736, 4994604, 6659472, 9989208, 19978416]

約数ペア:

[(1, 19978416), (2, 9989208), (3, 6659472), (4, 4994604), (6, 3329736), (8, 2497302), (9, 2219824), (12, 1664868), (16, 1248651), (18, 1109912), (24, 832434), (36, 554956), (48, 416217), (72, 277478), (144, 138739)]