18780558

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:209

約数の個数: 48

約数和(自身を含む): 40320336

約数和(自身を除く): 21539778

約数列:

[1, 2, 3, 6, 23, 46, 61, 69, 97, 122, 138, 183, 194, 291, 366, 529, 582, 1058, 1403, 1587, 2231, 2806, 3174, 4209, 4462, 5917, 6693, 8418, 11834, 13386, 17751, 32269, 35502, 51313, 64538, 96807, 102626, 136091, 153939, 193614, 272182, 307878, 408273, 816546, 3130093, 6260186, 9390279, 18780558]

約数ペア:

[(1, 18780558), (2, 9390279), (3, 6260186), (6, 3130093), (23, 816546), (46, 408273), (61, 307878), (69, 272182), (97, 193614), (122, 153939), (138, 136091), (183, 102626), (194, 96807), (291, 64538), (366, 51313), (529, 35502), (582, 32269), (1058, 17751), (1403, 13386), (1587, 11834), (2231, 8418), (2806, 6693), (3174, 5917), (4209, 4462)]