289689040

素因数分解:

$2^4\times 5^1\times {\mathrm{3621113}}^1$

素因数の和:3621126

約数の個数: 20

約数和(自身を含む): 673527204

約数和(自身を除く): 383838164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3621113, 7242226, 14484452, 18105565, 28968904, 36211130, 57937808, 72422260, 144844520, 289689040]

約数ペア:

[(1, 289689040), (2, 144844520), (4, 72422260), (5, 57937808), (8, 36211130), (10, 28968904), (16, 18105565), (20, 14484452), (40, 7242226), (80, 3621113)]