201455920

素因数分解:

$2^4\times 5^1\times {\mathrm{2518199}}^1$

素因数の和:2518212

約数の個数: 20

約数和(自身を含む): 468385200

約数和(自身を除く): 266929280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2518199, 5036398, 10072796, 12590995, 20145592, 25181990, 40291184, 50363980, 100727960, 201455920]

約数ペア:

[(1, 201455920), (2, 100727960), (4, 50363980), (5, 40291184), (8, 25181990), (10, 20145592), (16, 12590995), (20, 10072796), (40, 5036398), (80, 2518199)]