30787720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{18773}}^1$

素因数の和:18825

約数の個数: 32

約数和(自身を含む): 70965720

約数和(自身を除く): 40178000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 18773, 37546, 75092, 93865, 150184, 187730, 375460, 750920, 769693, 1539386, 3078772, 3848465, 6157544, 7696930, 15393860, 30787720]

約数ペア:

[(1, 30787720), (2, 15393860), (4, 7696930), (5, 6157544), (8, 3848465), (10, 3078772), (20, 1539386), (40, 769693), (41, 750920), (82, 375460), (164, 187730), (205, 150184), (328, 93865), (410, 75092), (820, 37546), (1640, 18773)]