21183780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3967}}^1$

素因数の和:4068

約数の個数: 48

約数和(自身を含む): 59996160

約数和(自身を除く): 38812380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 89, 178, 267, 356, 445, 534, 890, 1068, 1335, 1780, 2670, 3967, 5340, 7934, 11901, 15868, 19835, 23802, 39670, 47604, 59505, 79340, 119010, 238020, 353063, 706126, 1059189, 1412252, 1765315, 2118378, 3530630, 4236756, 5295945, 7061260, 10591890, 21183780]

約数ペア:

[(1, 21183780), (2, 10591890), (3, 7061260), (4, 5295945), (5, 4236756), (6, 3530630), (10, 2118378), (12, 1765315), (15, 1412252), (20, 1059189), (30, 706126), (60, 353063), (89, 238020), (178, 119010), (267, 79340), (356, 59505), (445, 47604), (534, 39670), (890, 23802), (1068, 19835), (1335, 15868), (1780, 11901), (2670, 7934), (3967, 5340)]