21066840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{421}}^1$

素因数の和:577

約数の個数: 96

約数和(自身を含む): 69123600

約数和(自身を除く): 48056760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 139, 180, 278, 360, 417, 421, 556, 695, 834, 842, 1112, 1251, 1263, 1390, 1668, 1684, 2085, 2105, 2502, 2526, 2780, 3336, 3368, 3789, 4170, 4210, 5004, 5052, 5560, 6255, 6315, 7578, 8340, 8420, 10008, 10104, 12510, 12630, 15156, 16680, 16840, 18945, 25020, 25260, 30312, 37890, 50040, 50520, 58519, 75780, 117038, 151560, 175557, 234076, 292595, 351114, 468152, 526671, 585190, 702228, 877785, 1053342, 1170380, 1404456, 1755570, 2106684, 2340760, 2633355, 3511140, 4213368, 5266710, 7022280, 10533420, 21066840]

約数ペア:

[(1, 21066840), (2, 10533420), (3, 7022280), (4, 5266710), (5, 4213368), (6, 3511140), (8, 2633355), (9, 2340760), (10, 2106684), (12, 1755570), (15, 1404456), (18, 1170380), (20, 1053342), (24, 877785), (30, 702228), (36, 585190), (40, 526671), (45, 468152), (60, 351114), (72, 292595), (90, 234076), (120, 175557), (139, 151560), (180, 117038), (278, 75780), (360, 58519), (417, 50520), (421, 50040), (556, 37890), (695, 30312), (834, 25260), (842, 25020), (1112, 18945), (1251, 16840), (1263, 16680), (1390, 15156), (1668, 12630), (1684, 12510), (2085, 10104), (2105, 10008), (2502, 8420), (2526, 8340), (2780, 7578), (3336, 6315), (3368, 6255), (3789, 5560), (4170, 5052), (4210, 5004)]