15501980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{547}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 35444640

約数和(自身を除く): 19942660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 547, 1090, 1094, 1417, 2180, 2188, 2735, 2834, 5470, 5668, 7085, 7111, 10940, 14170, 14222, 28340, 28444, 35555, 59623, 71110, 119246, 142220, 238492, 298115, 596230, 775099, 1192460, 1550198, 3100396, 3875495, 7750990, 15501980]

約数ペア:

[(1, 15501980), (2, 7750990), (4, 3875495), (5, 3100396), (10, 1550198), (13, 1192460), (20, 775099), (26, 596230), (52, 298115), (65, 238492), (109, 142220), (130, 119246), (218, 71110), (260, 59623), (436, 35555), (545, 28444), (547, 28340), (1090, 14222), (1094, 14170), (1417, 10940), (2180, 7111), (2188, 7085), (2735, 5668), (2834, 5470)]