721476

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{409}}^1$

素因数の和:433

約数の個数: 54

約数和(自身を含む): 2126670

約数和(自身を除く): 1405194

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 409, 441, 588, 818, 882, 1227, 1636, 1764, 2454, 2863, 3681, 4908, 5726, 7362, 8589, 11452, 14724, 17178, 20041, 25767, 34356, 40082, 51534, 60123, 80164, 103068, 120246, 180369, 240492, 360738, 721476]

約数ペア:

[(1, 721476), (2, 360738), (3, 240492), (4, 180369), (6, 120246), (7, 103068), (9, 80164), (12, 60123), (14, 51534), (18, 40082), (21, 34356), (28, 25767), (36, 20041), (42, 17178), (49, 14724), (63, 11452), (84, 8589), (98, 7362), (126, 5726), (147, 4908), (196, 3681), (252, 2863), (294, 2454), (409, 1764), (441, 1636), (588, 1227), (818, 882)]