21391272

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{42443}}^1$

素因数の和:42462

約数の個数: 48

約数和(自身を含む): 66212640

約数和(自身を除く): 44821368

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 63, 72, 84, 126, 168, 252, 504, 42443, 84886, 127329, 169772, 254658, 297101, 339544, 381987, 509316, 594202, 763974, 891303, 1018632, 1188404, 1527948, 1782606, 2376808, 2673909, 3055896, 3565212, 5347818, 7130424, 10695636, 21391272]

約数ペア:

[(1, 21391272), (2, 10695636), (3, 7130424), (4, 5347818), (6, 3565212), (7, 3055896), (8, 2673909), (9, 2376808), (12, 1782606), (14, 1527948), (18, 1188404), (21, 1018632), (24, 891303), (28, 763974), (36, 594202), (42, 509316), (56, 381987), (63, 339544), (72, 297101), (84, 254658), (126, 169772), (168, 127329), (252, 84886), (504, 42443)]