201620420

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1\times {\mathrm{397}}^1$

素因数の和:852

約数の個数: 48

約数和(自身を含む): 431941440

約数和(自身を除く): 230321020

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 379, 397, 670, 758, 794, 1340, 1516, 1588, 1895, 1985, 3790, 3970, 7580, 7940, 25393, 26599, 50786, 53198, 101572, 106396, 126965, 132995, 150463, 253930, 265990, 300926, 507860, 531980, 601852, 752315, 1504630, 3009260, 10081021, 20162042, 40324084, 50405105, 100810210, 201620420]

約数ペア:

[(1, 201620420), (2, 100810210), (4, 50405105), (5, 40324084), (10, 20162042), (20, 10081021), (67, 3009260), (134, 1504630), (268, 752315), (335, 601852), (379, 531980), (397, 507860), (670, 300926), (758, 265990), (794, 253930), (1340, 150463), (1516, 132995), (1588, 126965), (1895, 106396), (1985, 101572), (3790, 53198), (3970, 50786), (7580, 26599), (7940, 25393)]