18206825

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 28498176

約数和(自身を除く): 10291351

約数列:

[1, 5, 7, 13, 25, 35, 53, 65, 91, 151, 175, 265, 325, 371, 455, 689, 755, 1057, 1325, 1855, 1963, 2275, 3445, 3775, 4823, 5285, 8003, 9275, 9815, 13741, 17225, 24115, 26425, 40015, 49075, 56021, 68705, 104039, 120575, 200075, 280105, 343525, 520195, 728273, 1400525, 2600975, 3641365, 18206825]

約数ペア:

[(1, 18206825), (5, 3641365), (7, 2600975), (13, 1400525), (25, 728273), (35, 520195), (53, 343525), (65, 280105), (91, 200075), (151, 120575), (175, 104039), (265, 68705), (325, 56021), (371, 49075), (455, 40015), (689, 26425), (755, 24115), (1057, 17225), (1325, 13741), (1855, 9815), (1963, 9275), (2275, 8003), (3445, 5285), (3775, 4823)]