21681810

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{613}}^1$

素因数の和:760

約数の個数: 64

約数和(自身を含む): 58354560

約数和(自身を除く): 36672750

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 131, 135, 262, 270, 393, 613, 655, 786, 1179, 1226, 1310, 1839, 1965, 2358, 3065, 3537, 3678, 3930, 5517, 5895, 6130, 7074, 9195, 11034, 11790, 16551, 17685, 18390, 27585, 33102, 35370, 55170, 80303, 82755, 160606, 165510, 240909, 401515, 481818, 722727, 803030, 1204545, 1445454, 2168181, 2409090, 3613635, 4336362, 7227270, 10840905, 21681810]

約数ペア:

[(1, 21681810), (2, 10840905), (3, 7227270), (5, 4336362), (6, 3613635), (9, 2409090), (10, 2168181), (15, 1445454), (18, 1204545), (27, 803030), (30, 722727), (45, 481818), (54, 401515), (90, 240909), (131, 165510), (135, 160606), (262, 82755), (270, 80303), (393, 55170), (613, 35370), (655, 33102), (786, 27585), (1179, 18390), (1226, 17685), (1310, 16551), (1839, 11790), (1965, 11034), (2358, 9195), (3065, 7074), (3537, 6130), (3678, 5895), (3930, 5517)]