220920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{263}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 760320

約数和(自身を除く): 539400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 263, 280, 420, 526, 789, 840, 1052, 1315, 1578, 1841, 2104, 2630, 3156, 3682, 3945, 5260, 5523, 6312, 7364, 7890, 9205, 10520, 11046, 14728, 15780, 18410, 22092, 27615, 31560, 36820, 44184, 55230, 73640, 110460, 220920]

約数ペア:

[(1, 220920), (2, 110460), (3, 73640), (4, 55230), (5, 44184), (6, 36820), (7, 31560), (8, 27615), (10, 22092), (12, 18410), (14, 15780), (15, 14728), (20, 11046), (21, 10520), (24, 9205), (28, 7890), (30, 7364), (35, 6312), (40, 5523), (42, 5260), (56, 3945), (60, 3682), (70, 3156), (84, 2630), (105, 2104), (120, 1841), (140, 1578), (168, 1315), (210, 1052), (263, 840), (280, 789), (420, 526)]