19908133025

素因数分解:

$5^2\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{31489}}^1$

素因数の和:31551

約数の個数: 48

約数和(自身を含む): 28582843200

約数和(自身を除く): 8674710175

約数列:

[1, 5, 11, 19, 25, 55, 95, 121, 209, 275, 475, 605, 1045, 1331, 2299, 3025, 5225, 6655, 11495, 25289, 31489, 33275, 57475, 126445, 157445, 346379, 598291, 632225, 787225, 1731895, 2991455, 3810169, 6581201, 8659475, 14957275, 19050845, 32906005, 41911859, 72393211, 95254225, 164530025, 209559295, 361966055, 796325321, 1047796475, 1809830275, 3981626605, 19908133025]

約数ペア:

[(1, 19908133025), (5, 3981626605), (11, 1809830275), (19, 1047796475), (25, 796325321), (55, 361966055), (95, 209559295), (121, 164530025), (209, 95254225), (275, 72393211), (475, 41911859), (605, 32906005), (1045, 19050845), (1331, 14957275), (2299, 8659475), (3025, 6581201), (5225, 3810169), (6655, 2991455), (11495, 1731895), (25289, 787225), (31489, 632225), (33275, 598291), (57475, 346379), (126445, 157445)]