18871060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{401}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 43020432

約数和(自身を除く): 24149372

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 181, 260, 362, 401, 724, 802, 905, 1604, 1810, 2005, 2353, 3620, 4010, 4706, 5213, 8020, 9412, 10426, 11765, 20852, 23530, 26065, 47060, 52130, 72581, 104260, 145162, 290324, 362905, 725810, 943553, 1451620, 1887106, 3774212, 4717765, 9435530, 18871060]

約数ペア:

[(1, 18871060), (2, 9435530), (4, 4717765), (5, 3774212), (10, 1887106), (13, 1451620), (20, 943553), (26, 725810), (52, 362905), (65, 290324), (130, 145162), (181, 104260), (260, 72581), (362, 52130), (401, 47060), (724, 26065), (802, 23530), (905, 20852), (1604, 11765), (1810, 10426), (2005, 9412), (2353, 8020), (3620, 5213), (4010, 4706)]