839220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 2395008

約数和(自身を除く): 1555788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 197, 213, 284, 355, 394, 426, 591, 710, 788, 852, 985, 1065, 1182, 1420, 1970, 2130, 2364, 2955, 3940, 4260, 5910, 11820, 13987, 27974, 41961, 55948, 69935, 83922, 139870, 167844, 209805, 279740, 419610, 839220]

約数ペア:

[(1, 839220), (2, 419610), (3, 279740), (4, 209805), (5, 167844), (6, 139870), (10, 83922), (12, 69935), (15, 55948), (20, 41961), (30, 27974), (60, 13987), (71, 11820), (142, 5910), (197, 4260), (213, 3940), (284, 2955), (355, 2364), (394, 2130), (426, 1970), (591, 1420), (710, 1182), (788, 1065), (852, 985)]