1309840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{2339}}^1$

素因数の和:2359

約数の個数: 40

約数和(自身を含む): 3481920

約数和(自身を除く): 2172080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 2339, 4678, 9356, 11695, 16373, 18712, 23390, 32746, 37424, 46780, 65492, 81865, 93560, 130984, 163730, 187120, 261968, 327460, 654920, 1309840]

約数ペア:

[(1, 1309840), (2, 654920), (4, 327460), (5, 261968), (7, 187120), (8, 163730), (10, 130984), (14, 93560), (16, 81865), (20, 65492), (28, 46780), (35, 37424), (40, 32746), (56, 23390), (70, 18712), (80, 16373), (112, 11695), (140, 9356), (280, 4678), (560, 2339)]