81386120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{619}}^1$

素因数の和:822

約数の個数: 64

約数和(自身を含む): 194184000

約数和(自身を除く): 112797880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 173, 190, 346, 380, 619, 692, 760, 865, 1238, 1384, 1730, 2476, 3095, 3287, 3460, 4952, 6190, 6574, 6920, 11761, 12380, 13148, 16435, 23522, 24760, 26296, 32870, 47044, 58805, 65740, 94088, 107087, 117610, 131480, 214174, 235220, 428348, 470440, 535435, 856696, 1070870, 2034653, 2141740, 4069306, 4283480, 8138612, 10173265, 16277224, 20346530, 40693060, 81386120]

約数ペア:

[(1, 81386120), (2, 40693060), (4, 20346530), (5, 16277224), (8, 10173265), (10, 8138612), (19, 4283480), (20, 4069306), (38, 2141740), (40, 2034653), (76, 1070870), (95, 856696), (152, 535435), (173, 470440), (190, 428348), (346, 235220), (380, 214174), (619, 131480), (692, 117610), (760, 107087), (865, 94088), (1238, 65740), (1384, 58805), (1730, 47044), (2476, 32870), (3095, 26296), (3287, 24760), (3460, 23522), (4952, 16435), (6190, 13148), (6574, 12380), (6920, 11761)]