28161560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2339}}^1$

素因数の和:2400

約数の個数: 64

約数和(自身を含む): 74131200

約数和(自身を除く): 45969640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 860, 1204, 1505, 1720, 2339, 2408, 3010, 4678, 6020, 9356, 11695, 12040, 16373, 18712, 23390, 32746, 46780, 65492, 81865, 93560, 100577, 130984, 163730, 201154, 327460, 402308, 502885, 654920, 704039, 804616, 1005770, 1408078, 2011540, 2816156, 3520195, 4023080, 5632312, 7040390, 14080780, 28161560]

約数ペア:

[(1, 28161560), (2, 14080780), (4, 7040390), (5, 5632312), (7, 4023080), (8, 3520195), (10, 2816156), (14, 2011540), (20, 1408078), (28, 1005770), (35, 804616), (40, 704039), (43, 654920), (56, 502885), (70, 402308), (86, 327460), (140, 201154), (172, 163730), (215, 130984), (280, 100577), (301, 93560), (344, 81865), (430, 65492), (602, 46780), (860, 32746), (1204, 23390), (1505, 18712), (1720, 16373), (2339, 12040), (2408, 11695), (3010, 9356), (4678, 6020)]