320985420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{764251}}^1$

素因数の和:764270

約数の個数: 48

約数和(自身を含む): 1027154688

約数和(自身を除く): 706169268

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, 764251, 1528502, 2292753, 3057004, 3821255, 4585506, 5349757, 7642510, 9171012, 10699514, 11463765, 15285020, 16049271, 21399028, 22927530, 26748785, 32098542, 45855060, 53497570, 64197084, 80246355, 106995140, 160492710, 320985420]

約数ペア:

[(1, 320985420), (2, 160492710), (3, 106995140), (4, 80246355), (5, 64197084), (6, 53497570), (7, 45855060), (10, 32098542), (12, 26748785), (14, 22927530), (15, 21399028), (20, 16049271), (21, 15285020), (28, 11463765), (30, 10699514), (35, 9171012), (42, 7642510), (60, 5349757), (70, 4585506), (84, 3821255), (105, 3057004), (140, 2292753), (210, 1528502), (420, 764251)]