20741584

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{359}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 42318720

約数和(自身を除く): 21577136

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 157, 184, 314, 359, 368, 628, 718, 1256, 1436, 2512, 2872, 3611, 5744, 7222, 8257, 14444, 16514, 28888, 33028, 56363, 57776, 66056, 112726, 132112, 225452, 450904, 901808, 1296349, 2592698, 5185396, 10370792, 20741584]

約数ペア:

[(1, 20741584), (2, 10370792), (4, 5185396), (8, 2592698), (16, 1296349), (23, 901808), (46, 450904), (92, 225452), (157, 132112), (184, 112726), (314, 66056), (359, 57776), (368, 56363), (628, 33028), (718, 28888), (1256, 16514), (1436, 14444), (2512, 8257), (2872, 7222), (3611, 5744)]