21631980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{347}}^1\times {\mathrm{1039}}^1$

素因数の和:1398

約数の個数: 48

約数和(自身を含む): 60802560

約数和(自身を除く): 39170580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 347, 694, 1039, 1041, 1388, 1735, 2078, 2082, 3117, 3470, 4156, 4164, 5195, 5205, 6234, 6940, 10390, 10410, 12468, 15585, 20780, 20820, 31170, 62340, 360533, 721066, 1081599, 1442132, 1802665, 2163198, 3605330, 4326396, 5407995, 7210660, 10815990, 21631980]

約数ペア:

[(1, 21631980), (2, 10815990), (3, 7210660), (4, 5407995), (5, 4326396), (6, 3605330), (10, 2163198), (12, 1802665), (15, 1442132), (20, 1081599), (30, 721066), (60, 360533), (347, 62340), (694, 31170), (1039, 20820), (1041, 20780), (1388, 15585), (1735, 12468), (2078, 10410), (2082, 10390), (3117, 6940), (3470, 6234), (4156, 5205), (4164, 5195)]