221016795

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1\times {\mathrm{1249}}^1$

素因数の和:1555

約数の個数: 32

約数和(自身を含む): 362880000

約数和(自身を除く): 141863205

約数列:

[1, 3, 5, 15, 47, 141, 235, 251, 705, 753, 1249, 1255, 3747, 3765, 6245, 11797, 18735, 35391, 58703, 58985, 176109, 176955, 293515, 313499, 880545, 940497, 1567495, 4702485, 14734453, 44203359, 73672265, 221016795]

約数ペア:

[(1, 221016795), (3, 73672265), (5, 44203359), (15, 14734453), (47, 4702485), (141, 1567495), (235, 940497), (251, 880545), (705, 313499), (753, 293515), (1249, 176955), (1255, 176109), (3747, 58985), (3765, 58703), (6245, 35391), (11797, 18735)]