439547978680

素因数分解:

$2^3\times 5^1\times {\mathrm{61949}}^1\times {\mathrm{177383}}^1$

素因数の和:239343

約数の個数: 32

約数和(自身を含む): 989004492000

約数和(自身を除く): 549456513320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61949, 123898, 177383, 247796, 309745, 354766, 495592, 619490, 709532, 886915, 1238980, 1419064, 1773830, 2477960, 3547660, 7095320, 10988699467, 21977398934, 43954797868, 54943497335, 87909595736, 109886994670, 219773989340, 439547978680]

約数ペア:

[(1, 439547978680), (2, 219773989340), (4, 109886994670), (5, 87909595736), (8, 54943497335), (10, 43954797868), (20, 21977398934), (40, 10988699467), (61949, 7095320), (123898, 3547660), (177383, 2477960), (247796, 1773830), (309745, 1419064), (354766, 1238980), (495592, 886915), (619490, 709532)]