338778820

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{383}}^1\times {\mathrm{941}}^1$

素因数の和:1380

約数の個数: 48

約数和(自身を含む): 729243648

約数和(自身を除く): 390464828

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 383, 470, 766, 940, 941, 1532, 1882, 1915, 3764, 3830, 4705, 7660, 9410, 18001, 18820, 36002, 44227, 72004, 88454, 90005, 176908, 180010, 221135, 360020, 360403, 442270, 720806, 884540, 1441612, 1802015, 3604030, 7208060, 16938941, 33877882, 67755764, 84694705, 169389410, 338778820]

約数ペア:

[(1, 338778820), (2, 169389410), (4, 84694705), (5, 67755764), (10, 33877882), (20, 16938941), (47, 7208060), (94, 3604030), (188, 1802015), (235, 1441612), (383, 884540), (470, 720806), (766, 442270), (940, 360403), (941, 360020), (1532, 221135), (1882, 180010), (1915, 176908), (3764, 90005), (3830, 88454), (4705, 72004), (7660, 44227), (9410, 36002), (18001, 18820)]