19606925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 28414848

約数和(自身を除く): 8807923

約数列:

[1, 5, 13, 23, 25, 43, 61, 65, 115, 215, 299, 305, 325, 559, 575, 793, 989, 1075, 1403, 1495, 1525, 2623, 2795, 3965, 4945, 7015, 7475, 12857, 13115, 13975, 18239, 19825, 24725, 34099, 35075, 60329, 64285, 65575, 91195, 170495, 301645, 321425, 455975, 784277, 852475, 1508225, 3921385, 19606925]

約数ペア:

[(1, 19606925), (5, 3921385), (13, 1508225), (23, 852475), (25, 784277), (43, 455975), (61, 321425), (65, 301645), (115, 170495), (215, 91195), (299, 65575), (305, 64285), (325, 60329), (559, 35075), (575, 34099), (793, 24725), (989, 19825), (1075, 18239), (1403, 13975), (1495, 13115), (1525, 12857), (2623, 7475), (2795, 7015), (3965, 4945)]