21020412

素因数分解:

$2^2\times 3^1\times 7^3\times {\mathrm{5107}}^1$

素因数の和:5135

約数の個数: 48

約数和(自身を含む): 57209600

約数和(自身を除く): 36189188

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 196, 294, 343, 588, 686, 1029, 1372, 2058, 4116, 5107, 10214, 15321, 20428, 30642, 35749, 61284, 71498, 107247, 142996, 214494, 250243, 428988, 500486, 750729, 1000972, 1501458, 1751701, 3002916, 3503402, 5255103, 7006804, 10510206, 21020412]

約数ペア:

[(1, 21020412), (2, 10510206), (3, 7006804), (4, 5255103), (6, 3503402), (7, 3002916), (12, 1751701), (14, 1501458), (21, 1000972), (28, 750729), (42, 500486), (49, 428988), (84, 250243), (98, 214494), (147, 142996), (196, 107247), (294, 71498), (343, 61284), (588, 35749), (686, 30642), (1029, 20428), (1372, 15321), (2058, 10214), (4116, 5107)]