661005808

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{1332673}}^1$

素因数の和:1332712

約数の個数: 20

約数和(自身を含む): 1322012608

約数和(自身を除く): 661006800

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 1332673, 2665346, 5330692, 10661384, 21322768, 41312863, 82625726, 165251452, 330502904, 661005808]

約数ペア:

[(1, 661005808), (2, 330502904), (4, 165251452), (8, 82625726), (16, 41312863), (31, 21322768), (62, 10661384), (124, 5330692), (248, 2665346), (496, 1332673)]