19274320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:500

約数の個数: 80

約数和(自身を含む): 49496832

約数和(自身を除く): 30222512

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 431, 520, 559, 688, 860, 862, 1040, 1118, 1720, 1724, 2155, 2236, 2795, 3440, 3448, 4310, 4472, 5590, 5603, 6896, 8620, 8944, 11180, 11206, 17240, 18533, 22360, 22412, 28015, 34480, 37066, 44720, 44824, 56030, 74132, 89648, 92665, 112060, 148264, 185330, 224120, 240929, 296528, 370660, 448240, 481858, 741320, 963716, 1204645, 1482640, 1927432, 2409290, 3854864, 4818580, 9637160, 19274320]

約数ペア:

[(1, 19274320), (2, 9637160), (4, 4818580), (5, 3854864), (8, 2409290), (10, 1927432), (13, 1482640), (16, 1204645), (20, 963716), (26, 741320), (40, 481858), (43, 448240), (52, 370660), (65, 296528), (80, 240929), (86, 224120), (104, 185330), (130, 148264), (172, 112060), (208, 92665), (215, 89648), (260, 74132), (344, 56030), (430, 44824), (431, 44720), (520, 37066), (559, 34480), (688, 28015), (860, 22412), (862, 22360), (1040, 18533), (1118, 17240), (1720, 11206), (1724, 11180), (2155, 8944), (2236, 8620), (2795, 6896), (3440, 5603), (3448, 5590), (4310, 4472)]