17981950

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{619}}^1$

素因数の和:721

約数の個数: 48

約数和(自身を含む): 38747520

約数和(自身を除く): 20765570

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 83, 166, 175, 350, 415, 581, 619, 830, 1162, 1238, 2075, 2905, 3095, 4150, 4333, 5810, 6190, 8666, 14525, 15475, 21665, 29050, 30950, 43330, 51377, 102754, 108325, 216650, 256885, 359639, 513770, 719278, 1284425, 1798195, 2568850, 3596390, 8990975, 17981950]

約数ペア:

[(1, 17981950), (2, 8990975), (5, 3596390), (7, 2568850), (10, 1798195), (14, 1284425), (25, 719278), (35, 513770), (50, 359639), (70, 256885), (83, 216650), (166, 108325), (175, 102754), (350, 51377), (415, 43330), (581, 30950), (619, 29050), (830, 21665), (1162, 15475), (1238, 14525), (2075, 8666), (2905, 6190), (3095, 5810), (4150, 4333)]