21356370

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:440

約数の個数: 96

約数和(自身を含む): 64247040

約数和(自身を除く): 42890670

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 109, 126, 210, 218, 311, 315, 327, 545, 622, 630, 654, 763, 933, 981, 1090, 1526, 1555, 1635, 1866, 1962, 2177, 2289, 2799, 3110, 3270, 3815, 4354, 4578, 4665, 4905, 5598, 6531, 6867, 7630, 9330, 9810, 10885, 11445, 13062, 13734, 13995, 19593, 21770, 22890, 27990, 32655, 33899, 34335, 39186, 65310, 67798, 68670, 97965, 101697, 169495, 195930, 203394, 237293, 305091, 338990, 474586, 508485, 610182, 711879, 1016970, 1186465, 1423758, 1525455, 2135637, 2372930, 3050910, 3559395, 4271274, 7118790, 10678185, 21356370]

約数ペア:

[(1, 21356370), (2, 10678185), (3, 7118790), (5, 4271274), (6, 3559395), (7, 3050910), (9, 2372930), (10, 2135637), (14, 1525455), (15, 1423758), (18, 1186465), (21, 1016970), (30, 711879), (35, 610182), (42, 508485), (45, 474586), (63, 338990), (70, 305091), (90, 237293), (105, 203394), (109, 195930), (126, 169495), (210, 101697), (218, 97965), (311, 68670), (315, 67798), (327, 65310), (545, 39186), (622, 34335), (630, 33899), (654, 32655), (763, 27990), (933, 22890), (981, 21770), (1090, 19593), (1526, 13995), (1555, 13734), (1635, 13062), (1866, 11445), (1962, 10885), (2177, 9810), (2289, 9330), (2799, 7630), (3110, 6867), (3270, 6531), (3815, 5598), (4354, 4905), (4578, 4665)]