198974375

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:405

約数の個数: 40

約数和(自身を含む): 268451568

約数和(自身を除く): 69477193

約数列:

[1, 5, 17, 25, 61, 85, 125, 305, 307, 425, 625, 1037, 1525, 1535, 2125, 5185, 5219, 7625, 7675, 10625, 18727, 25925, 26095, 38125, 38375, 93635, 129625, 130475, 191875, 318359, 468175, 648125, 652375, 1591795, 2340875, 3261875, 7958975, 11704375, 39794875, 198974375]

約数ペア:

[(1, 198974375), (5, 39794875), (17, 11704375), (25, 7958975), (61, 3261875), (85, 2340875), (125, 1591795), (305, 652375), (307, 648125), (425, 468175), (625, 318359), (1037, 191875), (1525, 130475), (1535, 129625), (2125, 93635), (5185, 38375), (5219, 38125), (7625, 26095), (7675, 25925), (10625, 18727)]