321576780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{765659}}^1$

素因数の和:765678

約数の個数: 48

約数和(自身を含む): 1029047040

約数和(自身を除く): 707470260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 765659, 1531318, 2296977, 3062636, 3828295, 4593954, 5359613, 7656590, 9187908, 10719226, 11484885, 15313180, 16078839, 21438452, 22969770, 26798065, 32157678, 45939540, 53596130, 64315356, 80394195, 107192260, 160788390, 321576780]

約数ペア:

[(1, 321576780), (2, 160788390), (3, 107192260), (4, 80394195), (5, 64315356), (6, 53596130), (7, 45939540), (10, 32157678), (12, 26798065), (14, 22969770), (15, 21438452), (20, 16078839), (21, 15313180), (28, 11484885), (30, 10719226), (35, 9187908), (42, 7656590), (60, 5359613), (70, 4593954), (84, 3828295), (105, 3062636), (140, 2296977), (210, 1531318), (420, 765659)]