205199420

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{15569}}^1$

素因数の和:16237

約数の個数: 24

約数和(自身を含む): 431600400

約数和(自身を除く): 226400980

約数列:

[1, 2, 4, 5, 10, 20, 659, 1318, 2636, 3295, 6590, 13180, 15569, 31138, 62276, 77845, 155690, 311380, 10259971, 20519942, 41039884, 51299855, 102599710, 205199420]

約数ペア:

[(1, 205199420), (2, 102599710), (4, 51299855), (5, 41039884), (10, 20519942), (20, 10259971), (659, 311380), (1318, 155690), (2636, 77845), (3295, 62276), (6590, 31138), (13180, 15569)]