19900251

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{1093}}^1$

素因数の和:1140

約数の個数: 36

約数和(自身を含む): 34929232

約数和(自身を除く): 15028981

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 289, 357, 867, 1071, 1093, 2023, 2601, 3279, 6069, 7651, 9837, 18207, 18581, 22953, 55743, 68859, 130067, 167229, 315877, 390201, 947631, 1170603, 2211139, 2842893, 6633417, 19900251]

約数ペア:

[(1, 19900251), (3, 6633417), (7, 2842893), (9, 2211139), (17, 1170603), (21, 947631), (51, 390201), (63, 315877), (119, 167229), (153, 130067), (289, 68859), (357, 55743), (867, 22953), (1071, 18581), (1093, 18207), (2023, 9837), (2601, 7651), (3279, 6069)]