18681201358

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1\times {\mathrm{709}}^1$

素因数の和:1021

約数の個数: 64

約数和(自身を含む): 30560353920

約数和(自身を除く): 11879152562

約数列:

[1, 2, 23, 37, 46, 74, 113, 137, 226, 274, 709, 851, 1418, 1702, 2599, 3151, 4181, 5069, 5198, 6302, 8362, 10138, 15481, 16307, 26233, 30962, 32614, 52466, 80117, 96163, 97133, 116587, 160234, 192326, 194266, 233174, 356063, 572797, 603359, 712126, 1145594, 1206718, 1842691, 2234059, 2964329, 3593921, 3685382, 4468118, 5928658, 7187842, 10976029, 13174331, 21952058, 26348662, 68179567, 82660183, 136359134, 165320366, 252448667, 406113073, 504897334, 812226146, 9340600679, 18681201358]

約数ペア:

[(1, 18681201358), (2, 9340600679), (23, 812226146), (37, 504897334), (46, 406113073), (74, 252448667), (113, 165320366), (137, 136359134), (226, 82660183), (274, 68179567), (709, 26348662), (851, 21952058), (1418, 13174331), (1702, 10976029), (2599, 7187842), (3151, 5928658), (4181, 4468118), (5069, 3685382), (5198, 3593921), (6302, 2964329), (8362, 2234059), (10138, 1842691), (15481, 1206718), (16307, 1145594), (26233, 712126), (30962, 603359), (32614, 572797), (52466, 356063), (80117, 233174), (96163, 194266), (97133, 192326), (116587, 160234)]