21197790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{743}}^1$

素因数の和:1073

約数の個数: 48

約数和(自身を含む): 55362528

約数和(自身を除く): 34164738

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 317, 634, 743, 951, 1486, 1585, 1902, 2229, 2853, 3170, 3715, 4458, 4755, 5706, 6687, 7430, 9510, 11145, 13374, 14265, 22290, 28530, 33435, 66870, 235531, 471062, 706593, 1177655, 1413186, 2119779, 2355310, 3532965, 4239558, 7065930, 10598895, 21197790]

約数ペア:

[(1, 21197790), (2, 10598895), (3, 7065930), (5, 4239558), (6, 3532965), (9, 2355310), (10, 2119779), (15, 1413186), (18, 1177655), (30, 706593), (45, 471062), (90, 235531), (317, 66870), (634, 33435), (743, 28530), (951, 22290), (1486, 14265), (1585, 13374), (1902, 11145), (2229, 9510), (2853, 7430), (3170, 6687), (3715, 5706), (4458, 4755)]