16672220

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 36288000

約数和(自身を除く): 19615780

約数列:

[1, 2, 4, 5, 10, 20, 59, 71, 118, 142, 199, 236, 284, 295, 355, 398, 590, 710, 796, 995, 1180, 1420, 1990, 3980, 4189, 8378, 11741, 14129, 16756, 20945, 23482, 28258, 41890, 46964, 56516, 58705, 70645, 83780, 117410, 141290, 234820, 282580, 833611, 1667222, 3334444, 4168055, 8336110, 16672220]

約数ペア:

[(1, 16672220), (2, 8336110), (4, 4168055), (5, 3334444), (10, 1667222), (20, 833611), (59, 282580), (71, 234820), (118, 141290), (142, 117410), (199, 83780), (236, 70645), (284, 58705), (295, 56516), (355, 46964), (398, 41890), (590, 28258), (710, 23482), (796, 20945), (995, 16756), (1180, 14129), (1420, 11741), (1990, 8378), (3980, 4189)]