21915780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15881}}^1$

素因数の和:15916

約数の個数: 48

約数和(自身を含む): 64036224

約数和(自身を除く): 42120444

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15881, 31762, 47643, 63524, 79405, 95286, 158810, 190572, 238215, 317620, 365263, 476430, 730526, 952860, 1095789, 1461052, 1826315, 2191578, 3652630, 4383156, 5478945, 7305260, 10957890, 21915780]

約数ペア:

[(1, 21915780), (2, 10957890), (3, 7305260), (4, 5478945), (5, 4383156), (6, 3652630), (10, 2191578), (12, 1826315), (15, 1461052), (20, 1095789), (23, 952860), (30, 730526), (46, 476430), (60, 365263), (69, 317620), (92, 238215), (115, 190572), (138, 158810), (230, 95286), (276, 79405), (345, 63524), (460, 47643), (690, 31762), (1380, 15881)]