408988520

素因数分解:

$2^3\times 5^1\times {\mathrm{797}}^1\times {\mathrm{12829}}^1$

素因数の和:13637

約数の個数: 32

約数和(自身を含む): 921450600

約数和(自身を除く): 512462080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 797, 1594, 3188, 3985, 6376, 7970, 12829, 15940, 25658, 31880, 51316, 64145, 102632, 128290, 256580, 513160, 10224713, 20449426, 40898852, 51123565, 81797704, 102247130, 204494260, 408988520]

約数ペア:

[(1, 408988520), (2, 204494260), (4, 102247130), (5, 81797704), (8, 51123565), (10, 40898852), (20, 20449426), (40, 10224713), (797, 513160), (1594, 256580), (3188, 128290), (3985, 102632), (6376, 64145), (7970, 51316), (12829, 31880), (15940, 25658)]