18420880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12119}}^1$

素因数の和:12151

約数の個数: 40

約数和(自身を含む): 45086400

約数和(自身を除く): 26665520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12119, 24238, 48476, 60595, 96952, 121190, 193904, 230261, 242380, 460522, 484760, 921044, 969520, 1151305, 1842088, 2302610, 3684176, 4605220, 9210440, 18420880]

約数ペア:

[(1, 18420880), (2, 9210440), (4, 4605220), (5, 3684176), (8, 2302610), (10, 1842088), (16, 1151305), (19, 969520), (20, 921044), (38, 484760), (40, 460522), (76, 242380), (80, 230261), (95, 193904), (152, 121190), (190, 96952), (304, 60595), (380, 48476), (760, 24238), (1520, 12119)]