19540808

素因数分解:

$2^3\times 7^2\times {\mathrm{79}}^1\times {\mathrm{631}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 43228800

約数和(自身を除く): 23687992

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 79, 98, 158, 196, 316, 392, 553, 631, 632, 1106, 1262, 2212, 2524, 3871, 4417, 4424, 5048, 7742, 8834, 15484, 17668, 30919, 30968, 35336, 49849, 61838, 99698, 123676, 199396, 247352, 348943, 398792, 697886, 1395772, 2442601, 2791544, 4885202, 9770404, 19540808]

約数ペア:

[(1, 19540808), (2, 9770404), (4, 4885202), (7, 2791544), (8, 2442601), (14, 1395772), (28, 697886), (49, 398792), (56, 348943), (79, 247352), (98, 199396), (158, 123676), (196, 99698), (316, 61838), (392, 49849), (553, 35336), (631, 30968), (632, 30919), (1106, 17668), (1262, 15484), (2212, 8834), (2524, 7742), (3871, 5048), (4417, 4424)]