31259020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1103}}^1$

素因数の和:1234

約数の個数: 48

約数和(自身を含む): 71406720

約数和(自身を除く): 40147700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1103, 1417, 2180, 2206, 2834, 4412, 5515, 5668, 7085, 11030, 14170, 14339, 22060, 28340, 28678, 57356, 71695, 120227, 143390, 240454, 286780, 480908, 601135, 1202270, 1562951, 2404540, 3125902, 6251804, 7814755, 15629510, 31259020]

約数ペア:

[(1, 31259020), (2, 15629510), (4, 7814755), (5, 6251804), (10, 3125902), (13, 2404540), (20, 1562951), (26, 1202270), (52, 601135), (65, 480908), (109, 286780), (130, 240454), (218, 143390), (260, 120227), (436, 71695), (545, 57356), (1090, 28678), (1103, 28340), (1417, 22060), (2180, 14339), (2206, 14170), (2834, 11030), (4412, 7085), (5515, 5668)]