21639114

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{263}}^1\times {\mathrm{653}}^1$

素因数の和:931

約数の個数: 48

約数和(自身を含む): 53868672

約数和(自身を除く): 32229558

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 263, 526, 653, 789, 1306, 1578, 1841, 1959, 2367, 3682, 3918, 4571, 4734, 5523, 5877, 9142, 11046, 11754, 13713, 16569, 27426, 33138, 41139, 82278, 171739, 343478, 515217, 1030434, 1202173, 1545651, 2404346, 3091302, 3606519, 7213038, 10819557, 21639114]

約数ペア:

[(1, 21639114), (2, 10819557), (3, 7213038), (6, 3606519), (7, 3091302), (9, 2404346), (14, 1545651), (18, 1202173), (21, 1030434), (42, 515217), (63, 343478), (126, 171739), (263, 82278), (526, 41139), (653, 33138), (789, 27426), (1306, 16569), (1578, 13713), (1841, 11754), (1959, 11046), (2367, 9142), (3682, 5877), (3918, 5523), (4571, 4734)]