818860140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{1637}}^1$

素因数の和:2056

約数の個数: 144

約数和(自身を含む): 2847604032

約数和(自身を除く): 2028743892

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 397, 420, 630, 794, 1191, 1260, 1588, 1637, 1985, 2382, 2779, 3274, 3573, 3970, 4764, 4911, 5558, 5955, 6548, 7146, 7940, 8185, 8337, 9822, 11116, 11459, 11910, 13895, 14292, 14733, 16370, 16674, 17865, 19644, 22918, 23820, 24555, 25011, 27790, 29466, 32740, 33348, 34377, 35730, 41685, 45836, 49110, 50022, 55580, 57295, 58932, 68754, 71460, 73665, 83370, 98220, 100044, 103131, 114590, 125055, 137508, 147330, 166740, 171885, 206262, 229180, 250110, 294660, 343770, 412524, 500220, 515655, 649889, 687540, 1031310, 1299778, 1949667, 2062620, 2599556, 3249445, 3899334, 4549223, 5849001, 6498890, 7798668, 9098446, 9748335, 11698002, 12997780, 13647669, 18196892, 19496670, 22746115, 23396004, 27295338, 29245005, 38993340, 40943007, 45492230, 54590676, 58490010, 68238345, 81886014, 90984460, 116980020, 136476690, 163772028, 204715035, 272953380, 409430070, 818860140]

約数ペア:

[(1, 818860140), (2, 409430070), (3, 272953380), (4, 204715035), (5, 163772028), (6, 136476690), (7, 116980020), (9, 90984460), (10, 81886014), (12, 68238345), (14, 58490010), (15, 54590676), (18, 45492230), (20, 40943007), (21, 38993340), (28, 29245005), (30, 27295338), (35, 23396004), (36, 22746115), (42, 19496670), (45, 18196892), (60, 13647669), (63, 12997780), (70, 11698002), (84, 9748335), (90, 9098446), (105, 7798668), (126, 6498890), (140, 5849001), (180, 4549223), (210, 3899334), (252, 3249445), (315, 2599556), (397, 2062620), (420, 1949667), (630, 1299778), (794, 1031310), (1191, 687540), (1260, 649889), (1588, 515655), (1637, 500220), (1985, 412524), (2382, 343770), (2779, 294660), (3274, 250110), (3573, 229180), (3970, 206262), (4764, 171885), (4911, 166740), (5558, 147330), (5955, 137508), (6548, 125055), (7146, 114590), (7940, 103131), (8185, 100044), (8337, 98220), (9822, 83370), (11116, 73665), (11459, 71460), (11910, 68754), (13895, 58932), (14292, 57295), (14733, 55580), (16370, 50022), (16674, 49110), (17865, 45836), (19644, 41685), (22918, 35730), (23820, 34377), (24555, 33348), (25011, 32740), (27790, 29466)]