15865799380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1\times {\mathrm{25667}}^1$

素因数の和:26704

約数の個数: 48

約数和(自身を含む): 34428796416

約数和(自身を除く): 18562997036

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 997, 1994, 3988, 4985, 9970, 19940, 25667, 30907, 51334, 61814, 102668, 123628, 128335, 154535, 256670, 309070, 513340, 618140, 795677, 1591354, 3182708, 3978385, 7956770, 15913540, 25589999, 51179998, 102359996, 127949995, 255899990, 511799980, 793289969, 1586579938, 3173159876, 3966449845, 7932899690, 15865799380]

約数ペア:

[(1, 15865799380), (2, 7932899690), (4, 3966449845), (5, 3173159876), (10, 1586579938), (20, 793289969), (31, 511799980), (62, 255899990), (124, 127949995), (155, 102359996), (310, 51179998), (620, 25589999), (997, 15913540), (1994, 7956770), (3988, 3978385), (4985, 3182708), (9970, 1591354), (19940, 795677), (25667, 618140), (30907, 513340), (51334, 309070), (61814, 256670), (102668, 154535), (123628, 128335)]