83871140

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{487}}^1$

素因数の和:684

約数の個数: 48

約数和(自身を含む): 180364800

約数和(自身を除く): 96493660

約数列:

[1, 2, 4, 5, 10, 20, 79, 109, 158, 218, 316, 395, 436, 487, 545, 790, 974, 1090, 1580, 1948, 2180, 2435, 4870, 8611, 9740, 17222, 34444, 38473, 43055, 53083, 76946, 86110, 106166, 153892, 172220, 192365, 212332, 265415, 384730, 530830, 769460, 1061660, 4193557, 8387114, 16774228, 20967785, 41935570, 83871140]

約数ペア:

[(1, 83871140), (2, 41935570), (4, 20967785), (5, 16774228), (10, 8387114), (20, 4193557), (79, 1061660), (109, 769460), (158, 530830), (218, 384730), (316, 265415), (395, 212332), (436, 192365), (487, 172220), (545, 153892), (790, 106166), (974, 86110), (1090, 76946), (1580, 53083), (1948, 43055), (2180, 38473), (2435, 34444), (4870, 17222), (8611, 9740)]