28981725

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{317}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 51103872

約数和(自身を除く): 22122147

約数列:

[1, 3, 5, 15, 23, 25, 53, 69, 75, 115, 159, 265, 317, 345, 575, 795, 951, 1219, 1325, 1585, 1725, 3657, 3975, 4755, 6095, 7291, 7925, 16801, 18285, 21873, 23775, 30475, 36455, 50403, 84005, 91425, 109365, 182275, 252015, 386423, 420025, 546825, 1159269, 1260075, 1932115, 5796345, 9660575, 28981725]

約数ペア:

[(1, 28981725), (3, 9660575), (5, 5796345), (15, 1932115), (23, 1260075), (25, 1159269), (53, 546825), (69, 420025), (75, 386423), (115, 252015), (159, 182275), (265, 109365), (317, 91425), (345, 84005), (575, 50403), (795, 36455), (951, 30475), (1219, 23775), (1325, 21873), (1585, 18285), (1725, 16801), (3657, 7925), (3975, 7291), (4755, 6095)]