199290440

素因数分解:

$2^3\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{3989}}^1$

素因数の和:5249

約数の個数: 32

約数和(自身を含む): 448875000

約数和(自身を除く): 249584560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1249, 2498, 3989, 4996, 6245, 7978, 9992, 12490, 15956, 19945, 24980, 31912, 39890, 49960, 79780, 159560, 4982261, 9964522, 19929044, 24911305, 39858088, 49822610, 99645220, 199290440]

約数ペア:

[(1, 199290440), (2, 99645220), (4, 49822610), (5, 39858088), (8, 24911305), (10, 19929044), (20, 9964522), (40, 4982261), (1249, 159560), (2498, 79780), (3989, 49960), (4996, 39890), (6245, 31912), (7978, 24980), (9992, 19945), (12490, 15956)]