20561172

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 52026240

約数和(自身を除く): 31465068

約数列:

[1, 2, 3, 4, 6, 12, 23, 41, 46, 69, 79, 82, 92, 123, 138, 158, 164, 237, 246, 276, 316, 474, 492, 529, 943, 948, 1058, 1587, 1817, 1886, 2116, 2829, 3174, 3239, 3634, 3772, 5451, 5658, 6348, 6478, 7268, 9717, 10902, 11316, 12956, 19434, 21689, 21804, 38868, 41791, 43378, 65067, 74497, 83582, 86756, 125373, 130134, 148994, 167164, 223491, 250746, 260268, 297988, 446982, 501492, 893964, 1713431, 3426862, 5140293, 6853724, 10280586, 20561172]

約数ペア:

[(1, 20561172), (2, 10280586), (3, 6853724), (4, 5140293), (6, 3426862), (12, 1713431), (23, 893964), (41, 501492), (46, 446982), (69, 297988), (79, 260268), (82, 250746), (92, 223491), (123, 167164), (138, 148994), (158, 130134), (164, 125373), (237, 86756), (246, 83582), (276, 74497), (316, 65067), (474, 43378), (492, 41791), (529, 38868), (943, 21804), (948, 21689), (1058, 19434), (1587, 12956), (1817, 11316), (1886, 10902), (2116, 9717), (2829, 7268), (3174, 6478), (3239, 6348), (3634, 5658), (3772, 5451)]