21271446

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{401}}^1\times {\mathrm{421}}^1$

素因数の和:837

約数の個数: 48

約数和(自身を含む): 52928928

約数和(自身を除く): 31657482

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 401, 421, 802, 842, 1203, 1263, 2406, 2526, 2807, 2947, 3609, 3789, 5614, 5894, 7218, 7578, 8421, 8841, 16842, 17682, 25263, 26523, 50526, 53046, 168821, 337642, 506463, 1012926, 1181747, 1519389, 2363494, 3038778, 3545241, 7090482, 10635723, 21271446]

約数ペア:

[(1, 21271446), (2, 10635723), (3, 7090482), (6, 3545241), (7, 3038778), (9, 2363494), (14, 1519389), (18, 1181747), (21, 1012926), (42, 506463), (63, 337642), (126, 168821), (401, 53046), (421, 50526), (802, 26523), (842, 25263), (1203, 17682), (1263, 16842), (2406, 8841), (2526, 8421), (2807, 7578), (2947, 7218), (3609, 5894), (3789, 5614)]