18948880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13933}}^1$

素因数の和:13963

約数の個数: 40

約数和(自身を含む): 46651032

約数和(自身を除く): 27702152

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13933, 27866, 55732, 69665, 111464, 139330, 222928, 236861, 278660, 473722, 557320, 947444, 1114640, 1184305, 1894888, 2368610, 3789776, 4737220, 9474440, 18948880]

約数ペア:

[(1, 18948880), (2, 9474440), (4, 4737220), (5, 3789776), (8, 2368610), (10, 1894888), (16, 1184305), (17, 1114640), (20, 947444), (34, 557320), (40, 473722), (68, 278660), (80, 236861), (85, 222928), (136, 139330), (170, 111464), (272, 69665), (340, 55732), (680, 27866), (1360, 13933)]