18911060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{839}}^1$

素因数の和:885

約数の個数: 72

約数和(自身を含む): 48263040

約数和(自身を除く): 29351980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 839, 980, 1127, 1610, 1678, 2254, 3220, 3356, 4195, 4508, 5635, 5873, 8390, 11270, 11746, 16780, 19297, 22540, 23492, 29365, 38594, 41111, 58730, 77188, 82222, 96485, 117460, 135079, 164444, 192970, 205555, 270158, 385940, 411110, 540316, 675395, 822220, 945553, 1350790, 1891106, 2701580, 3782212, 4727765, 9455530, 18911060]

約数ペア:

[(1, 18911060), (2, 9455530), (4, 4727765), (5, 3782212), (7, 2701580), (10, 1891106), (14, 1350790), (20, 945553), (23, 822220), (28, 675395), (35, 540316), (46, 411110), (49, 385940), (70, 270158), (92, 205555), (98, 192970), (115, 164444), (140, 135079), (161, 117460), (196, 96485), (230, 82222), (245, 77188), (322, 58730), (460, 41111), (490, 38594), (644, 29365), (805, 23492), (839, 22540), (980, 19297), (1127, 16780), (1610, 11746), (1678, 11270), (2254, 8390), (3220, 5873), (3356, 5635), (4195, 4508)]