21989175

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1187}}^1$

素因数の和:1232

約数の個数: 48

約数和(自身を含む): 41247360

約数和(自身を除く): 19258185

約数列:

[1, 3, 5, 13, 15, 19, 25, 39, 57, 65, 75, 95, 195, 247, 285, 325, 475, 741, 975, 1187, 1235, 1425, 3561, 3705, 5935, 6175, 15431, 17805, 18525, 22553, 29675, 46293, 67659, 77155, 89025, 112765, 231465, 293189, 338295, 385775, 563825, 879567, 1157325, 1465945, 1691475, 4397835, 7329725, 21989175]

約数ペア:

[(1, 21989175), (3, 7329725), (5, 4397835), (13, 1691475), (15, 1465945), (19, 1157325), (25, 879567), (39, 563825), (57, 385775), (65, 338295), (75, 293189), (95, 231465), (195, 112765), (247, 89025), (285, 77155), (325, 67659), (475, 46293), (741, 29675), (975, 22553), (1187, 18525), (1235, 17805), (1425, 15431), (3561, 6175), (3705, 5935)]