664989976

素因数分解:

$2^3\times 7^2\times {\mathrm{71}}^1\times {\mathrm{23893}}^1$

素因数の和:23984

約数の個数: 48

約数和(自身を含む): 1470914640

約数和(自身を除く): 805924664

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 71, 98, 142, 196, 284, 392, 497, 568, 994, 1988, 3479, 3976, 6958, 13916, 23893, 27832, 47786, 95572, 167251, 191144, 334502, 669004, 1170757, 1338008, 1696403, 2341514, 3392806, 4683028, 6785612, 9366056, 11874821, 13571224, 23749642, 47499284, 83123747, 94998568, 166247494, 332494988, 664989976]

約数ペア:

[(1, 664989976), (2, 332494988), (4, 166247494), (7, 94998568), (8, 83123747), (14, 47499284), (28, 23749642), (49, 13571224), (56, 11874821), (71, 9366056), (98, 6785612), (142, 4683028), (196, 3392806), (284, 2341514), (392, 1696403), (497, 1338008), (568, 1170757), (994, 669004), (1988, 334502), (3479, 191144), (3976, 167251), (6958, 95572), (13916, 47786), (23893, 27832)]