20493080

素因数分解:

$2^3\times 5^1\times {\mathrm{541}}^1\times {\mathrm{947}}^1$

素因数の和:1499

約数の個数: 32

約数和(自身を含む): 46243440

約数和(自身を除く): 25750360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541, 947, 1082, 1894, 2164, 2705, 3788, 4328, 4735, 5410, 7576, 9470, 10820, 18940, 21640, 37880, 512327, 1024654, 2049308, 2561635, 4098616, 5123270, 10246540, 20493080]

約数ペア:

[(1, 20493080), (2, 10246540), (4, 5123270), (5, 4098616), (8, 2561635), (10, 2049308), (20, 1024654), (40, 512327), (541, 37880), (947, 21640), (1082, 18940), (1894, 10820), (2164, 9470), (2705, 7576), (3788, 5410), (4328, 4735)]