21360

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89}}^1$

素因数の和:105

約数の個数: 40

約数和(自身を含む): 66960

約数和(自身を除く): 45600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 89, 120, 178, 240, 267, 356, 445, 534, 712, 890, 1068, 1335, 1424, 1780, 2136, 2670, 3560, 4272, 5340, 7120, 10680, 21360]

約数ペア:

[(1, 21360), (2, 10680), (3, 7120), (4, 5340), (5, 4272), (6, 3560), (8, 2670), (10, 2136), (12, 1780), (15, 1424), (16, 1335), (20, 1068), (24, 890), (30, 712), (40, 534), (48, 445), (60, 356), (80, 267), (89, 240), (120, 178)]