2690190

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:505

約数の個数: 48

約数和(自身を含む): 7109856

約数和(自身を除く): 4419666

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 142, 213, 355, 421, 426, 639, 710, 842, 1065, 1263, 1278, 2105, 2130, 2526, 3195, 3789, 4210, 6315, 6390, 7578, 12630, 18945, 29891, 37890, 59782, 89673, 149455, 179346, 269019, 298910, 448365, 538038, 896730, 1345095, 2690190]

約数ペア:

[(1, 2690190), (2, 1345095), (3, 896730), (5, 538038), (6, 448365), (9, 298910), (10, 269019), (15, 179346), (18, 149455), (30, 89673), (45, 59782), (71, 37890), (90, 29891), (142, 18945), (213, 12630), (355, 7578), (421, 6390), (426, 6315), (639, 4210), (710, 3789), (842, 3195), (1065, 2526), (1263, 2130), (1278, 2105)]