18994870

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:672

約数の個数: 32

約数和(自身を含む): 36223200

約数和(自身を除く): 17228330

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 257, 389, 514, 778, 1285, 1945, 2570, 3890, 4883, 7391, 9766, 14782, 24415, 36955, 48830, 73910, 99973, 199946, 499865, 999730, 1899487, 3798974, 9497435, 18994870]

約数ペア:

[(1, 18994870), (2, 9497435), (5, 3798974), (10, 1899487), (19, 999730), (38, 499865), (95, 199946), (190, 99973), (257, 73910), (389, 48830), (514, 36955), (778, 24415), (1285, 14782), (1945, 9766), (2570, 7391), (3890, 4883)]