21539910

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{14653}}^1$

素因数の和:14677

約数の個数: 48

約数和(自身を含む): 60140016

約数和(自身を除く): 38600106

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 14653, 29306, 43959, 73265, 87918, 102571, 146530, 205142, 219795, 307713, 439590, 512855, 615426, 717997, 1025710, 1435994, 1538565, 2153991, 3077130, 3589985, 4307982, 7179970, 10769955, 21539910]

約数ペア:

[(1, 21539910), (2, 10769955), (3, 7179970), (5, 4307982), (6, 3589985), (7, 3077130), (10, 2153991), (14, 1538565), (15, 1435994), (21, 1025710), (30, 717997), (35, 615426), (42, 512855), (49, 439590), (70, 307713), (98, 219795), (105, 205142), (147, 146530), (210, 102571), (245, 87918), (294, 73265), (490, 43959), (735, 29306), (1470, 14653)]