221235420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{4021}}^1$

素因数の和:4171

約数の個数: 96

約数和(自身を含む): 713534976

約数和(自身を除く): 492299556

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 131, 140, 210, 262, 393, 420, 524, 655, 786, 917, 1310, 1572, 1834, 1965, 2620, 2751, 3668, 3930, 4021, 4585, 5502, 7860, 8042, 9170, 11004, 12063, 13755, 16084, 18340, 20105, 24126, 27510, 28147, 40210, 48252, 55020, 56294, 60315, 80420, 84441, 112588, 120630, 140735, 168882, 241260, 281470, 337764, 422205, 526751, 562940, 844410, 1053502, 1580253, 1688820, 2107004, 2633755, 3160506, 3687257, 5267510, 6321012, 7374514, 7901265, 10535020, 11061771, 14749028, 15802530, 18436285, 22123542, 31605060, 36872570, 44247084, 55308855, 73745140, 110617710, 221235420]

約数ペア:

[(1, 221235420), (2, 110617710), (3, 73745140), (4, 55308855), (5, 44247084), (6, 36872570), (7, 31605060), (10, 22123542), (12, 18436285), (14, 15802530), (15, 14749028), (20, 11061771), (21, 10535020), (28, 7901265), (30, 7374514), (35, 6321012), (42, 5267510), (60, 3687257), (70, 3160506), (84, 2633755), (105, 2107004), (131, 1688820), (140, 1580253), (210, 1053502), (262, 844410), (393, 562940), (420, 526751), (524, 422205), (655, 337764), (786, 281470), (917, 241260), (1310, 168882), (1572, 140735), (1834, 120630), (1965, 112588), (2620, 84441), (2751, 80420), (3668, 60315), (3930, 56294), (4021, 55020), (4585, 48252), (5502, 40210), (7860, 28147), (8042, 27510), (9170, 24126), (11004, 20105), (12063, 18340), (13755, 16084)]