19911672460

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1283}}^1\times {\mathrm{12721}}^1$

素因数の和:14074

約数の個数: 48

約数和(自身を含む): 42536464992

約数和(自身を除く): 22624792532

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 1283, 2566, 5132, 6415, 12721, 12830, 25442, 25660, 50884, 63605, 78263, 127210, 156526, 254420, 313052, 391315, 775981, 782630, 1551962, 1565260, 3103924, 3879905, 7759810, 15519620, 16321043, 32642086, 65284172, 81605215, 163210430, 326420860, 995583623, 1991167246, 3982334492, 4977918115, 9955836230, 19911672460]

約数ペア:

[(1, 19911672460), (2, 9955836230), (4, 4977918115), (5, 3982334492), (10, 1991167246), (20, 995583623), (61, 326420860), (122, 163210430), (244, 81605215), (305, 65284172), (610, 32642086), (1220, 16321043), (1283, 15519620), (2566, 7759810), (5132, 3879905), (6415, 3103924), (12721, 1565260), (12830, 1551962), (25442, 782630), (25660, 775981), (50884, 391315), (63605, 313052), (78263, 254420), (127210, 156526)]