278330390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{4877}}^1$

素因数の和:5336

約数の個数: 32

約数和(自身を含む): 540872640

約数和(自身を除く): 262542250

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 439, 878, 2195, 4390, 4877, 5707, 9754, 11414, 24385, 28535, 48770, 57070, 63401, 126802, 317005, 634010, 2141003, 4282006, 10705015, 21410030, 27833039, 55666078, 139165195, 278330390]

約数ペア:

[(1, 278330390), (2, 139165195), (5, 55666078), (10, 27833039), (13, 21410030), (26, 10705015), (65, 4282006), (130, 2141003), (439, 634010), (878, 317005), (2195, 126802), (4390, 63401), (4877, 57070), (5707, 48770), (9754, 28535), (11414, 24385)]