19965196

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 38384640

約数和(自身を除く): 18419444

約数列:

[1, 2, 4, 23, 41, 46, 67, 79, 82, 92, 134, 158, 164, 268, 316, 943, 1541, 1817, 1886, 2747, 3082, 3239, 3634, 3772, 5293, 5494, 6164, 6478, 7268, 10586, 10988, 12956, 21172, 63181, 74497, 121739, 126362, 148994, 217013, 243478, 252724, 297988, 434026, 486956, 868052, 4991299, 9982598, 19965196]

約数ペア:

[(1, 19965196), (2, 9982598), (4, 4991299), (23, 868052), (41, 486956), (46, 434026), (67, 297988), (79, 252724), (82, 243478), (92, 217013), (134, 148994), (158, 126362), (164, 121739), (268, 74497), (316, 63181), (943, 21172), (1541, 12956), (1817, 10988), (1886, 10586), (2747, 7268), (3082, 6478), (3239, 6164), (3634, 5494), (3772, 5293)]