28448225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 42497280

約数和(自身を除く): 14049055

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 221, 247, 271, 323, 325, 425, 475, 1105, 1235, 1355, 1615, 3523, 4199, 4607, 5149, 5525, 6175, 6775, 8075, 17615, 20995, 23035, 25745, 59891, 66937, 87533, 88075, 104975, 115175, 128725, 299455, 334685, 437665, 1137929, 1497275, 1673425, 2188325, 5689645, 28448225]

約数ペア:

[(1, 28448225), (5, 5689645), (13, 2188325), (17, 1673425), (19, 1497275), (25, 1137929), (65, 437665), (85, 334685), (95, 299455), (221, 128725), (247, 115175), (271, 104975), (323, 88075), (325, 87533), (425, 66937), (475, 59891), (1105, 25745), (1235, 23035), (1355, 20995), (1615, 17615), (3523, 8075), (4199, 6775), (4607, 6175), (5149, 5525)]