21996408

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{421}}^1$

素因数の和:748

約数の個数: 64

約数和(自身を含む): 63198720

約数和(自身を除く): 41202312

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 311, 421, 622, 842, 933, 1244, 1263, 1684, 1866, 2177, 2488, 2526, 2947, 3368, 3732, 4354, 5052, 5894, 6531, 7464, 8708, 8841, 10104, 11788, 13062, 17416, 17682, 23576, 26124, 35364, 52248, 70728, 130931, 261862, 392793, 523724, 785586, 916517, 1047448, 1571172, 1833034, 2749551, 3142344, 3666068, 5499102, 7332136, 10998204, 21996408]

約数ペア:

[(1, 21996408), (2, 10998204), (3, 7332136), (4, 5499102), (6, 3666068), (7, 3142344), (8, 2749551), (12, 1833034), (14, 1571172), (21, 1047448), (24, 916517), (28, 785586), (42, 523724), (56, 392793), (84, 261862), (168, 130931), (311, 70728), (421, 52248), (622, 35364), (842, 26124), (933, 23576), (1244, 17682), (1263, 17416), (1684, 13062), (1866, 11788), (2177, 10104), (2488, 8841), (2526, 8708), (2947, 7464), (3368, 6531), (3732, 5894), (4354, 5052)]