30639140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2459}}^1$

素因数の和:2564

約数の個数: 48

約数和(自身を含む): 74390400

約数和(自身を除く): 43751260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1780, 2459, 2492, 3115, 4918, 6230, 9836, 12295, 12460, 17213, 24590, 34426, 49180, 68852, 86065, 172130, 218851, 344260, 437702, 875404, 1094255, 1531957, 2188510, 3063914, 4377020, 6127828, 7659785, 15319570, 30639140]

約数ペア:

[(1, 30639140), (2, 15319570), (4, 7659785), (5, 6127828), (7, 4377020), (10, 3063914), (14, 2188510), (20, 1531957), (28, 1094255), (35, 875404), (70, 437702), (89, 344260), (140, 218851), (178, 172130), (356, 86065), (445, 68852), (623, 49180), (890, 34426), (1246, 24590), (1780, 17213), (2459, 12460), (2492, 12295), (3115, 9836), (4918, 6230)]