20921784793

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{277}}^1\times {\mathrm{7757}}^1$

素因数の和:8161

約数の個数: 32

約数和(自身を含む): 26087733504

約数和(自身を除く): 5165948711

約数列:

[1, 7, 13, 91, 107, 277, 749, 1391, 1939, 3601, 7757, 9737, 25207, 29639, 54299, 100841, 207473, 385307, 705887, 829999, 2148689, 2697149, 5809993, 10789987, 15040823, 27932957, 75529909, 195530699, 229909723, 1609368061, 2988826399, 20921784793]

約数ペア:

[(1, 20921784793), (7, 2988826399), (13, 1609368061), (91, 229909723), (107, 195530699), (277, 75529909), (749, 27932957), (1391, 15040823), (1939, 10789987), (3601, 5809993), (7757, 2697149), (9737, 2148689), (25207, 829999), (29639, 705887), (54299, 385307), (100841, 207473)]