16564428

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:487

約数の個数: 72

約数和(自身を含む): 44910320

約数和(自身を除く): 28345892

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 61, 76, 114, 122, 171, 183, 228, 244, 342, 366, 397, 549, 684, 732, 794, 1098, 1159, 1191, 1588, 2196, 2318, 2382, 3477, 3573, 4636, 4764, 6954, 7146, 7543, 10431, 13908, 14292, 15086, 20862, 22629, 24217, 30172, 41724, 45258, 48434, 67887, 72651, 90516, 96868, 135774, 145302, 217953, 271548, 290604, 435906, 460123, 871812, 920246, 1380369, 1840492, 2760738, 4141107, 5521476, 8282214, 16564428]

約数ペア:

[(1, 16564428), (2, 8282214), (3, 5521476), (4, 4141107), (6, 2760738), (9, 1840492), (12, 1380369), (18, 920246), (19, 871812), (36, 460123), (38, 435906), (57, 290604), (61, 271548), (76, 217953), (114, 145302), (122, 135774), (171, 96868), (183, 90516), (228, 72651), (244, 67887), (342, 48434), (366, 45258), (397, 41724), (549, 30172), (684, 24217), (732, 22629), (794, 20862), (1098, 15086), (1159, 14292), (1191, 13908), (1588, 10431), (2196, 7543), (2318, 7146), (2382, 6954), (3477, 4764), (3573, 4636)]