408040880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{392347}}^1$

素因数の和:392373

約数の個数: 40

約数和(自身を含む): 1021674192

約数和(自身を除く): 613633312

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 392347, 784694, 1569388, 1961735, 3138776, 3923470, 5100511, 6277552, 7846940, 10201022, 15693880, 20402044, 25502555, 31387760, 40804088, 51005110, 81608176, 102010220, 204020440, 408040880]

約数ペア:

[(1, 408040880), (2, 204020440), (4, 102010220), (5, 81608176), (8, 51005110), (10, 40804088), (13, 31387760), (16, 25502555), (20, 20402044), (26, 15693880), (40, 10201022), (52, 7846940), (65, 6277552), (80, 5100511), (104, 3923470), (130, 3138776), (208, 1961735), (260, 1569388), (520, 784694), (1040, 392347)]