19887464

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{491}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 38435040

約数和(自身を除く): 18547576

約数列:

[1, 2, 4, 8, 61, 83, 122, 166, 244, 332, 488, 491, 664, 982, 1964, 3928, 5063, 10126, 20252, 29951, 40504, 40753, 59902, 81506, 119804, 163012, 239608, 326024, 2485933, 4971866, 9943732, 19887464]

約数ペア:

[(1, 19887464), (2, 9943732), (4, 4971866), (8, 2485933), (61, 326024), (83, 239608), (122, 163012), (166, 119804), (244, 81506), (332, 59902), (488, 40753), (491, 40504), (664, 29951), (982, 20252), (1964, 10126), (3928, 5063)]