21328380

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{311}}^1$

素因数の和:456

約数の個数: 96

約数和(自身を含む): 67092480

約数和(自身を除く): 45764100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 127, 135, 180, 254, 270, 311, 381, 508, 540, 622, 635, 762, 933, 1143, 1244, 1270, 1524, 1555, 1866, 1905, 2286, 2540, 2799, 3110, 3429, 3732, 3810, 4572, 4665, 5598, 5715, 6220, 6858, 7620, 8397, 9330, 11196, 11430, 13716, 13995, 16794, 17145, 18660, 22860, 27990, 33588, 34290, 39497, 41985, 55980, 68580, 78994, 83970, 118491, 157988, 167940, 197485, 236982, 355473, 394970, 473964, 592455, 710946, 789940, 1066419, 1184910, 1421892, 1777365, 2132838, 2369820, 3554730, 4265676, 5332095, 7109460, 10664190, 21328380]

約数ペア:

[(1, 21328380), (2, 10664190), (3, 7109460), (4, 5332095), (5, 4265676), (6, 3554730), (9, 2369820), (10, 2132838), (12, 1777365), (15, 1421892), (18, 1184910), (20, 1066419), (27, 789940), (30, 710946), (36, 592455), (45, 473964), (54, 394970), (60, 355473), (90, 236982), (108, 197485), (127, 167940), (135, 157988), (180, 118491), (254, 83970), (270, 78994), (311, 68580), (381, 55980), (508, 41985), (540, 39497), (622, 34290), (635, 33588), (762, 27990), (933, 22860), (1143, 18660), (1244, 17145), (1270, 16794), (1524, 13995), (1555, 13716), (1866, 11430), (1905, 11196), (2286, 9330), (2540, 8397), (2799, 7620), (3110, 6858), (3429, 6220), (3732, 5715), (3810, 5598), (4572, 4665)]