21403020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{311}}^1$

素因数の和:391

約数の個数: 96

約数和(自身を含む): 63737856

約数和(自身を除く): 42334836

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 37, 60, 62, 74, 93, 111, 124, 148, 155, 185, 186, 222, 310, 311, 370, 372, 444, 465, 555, 620, 622, 740, 930, 933, 1110, 1147, 1244, 1555, 1860, 1866, 2220, 2294, 3110, 3441, 3732, 4588, 4665, 5735, 6220, 6882, 9330, 9641, 11470, 11507, 13764, 17205, 18660, 19282, 22940, 23014, 28923, 34410, 34521, 38564, 46028, 48205, 57535, 57846, 68820, 69042, 96410, 115070, 115692, 138084, 144615, 172605, 192820, 230140, 289230, 345210, 356717, 578460, 690420, 713434, 1070151, 1426868, 1783585, 2140302, 3567170, 4280604, 5350755, 7134340, 10701510, 21403020]

約数ペア:

[(1, 21403020), (2, 10701510), (3, 7134340), (4, 5350755), (5, 4280604), (6, 3567170), (10, 2140302), (12, 1783585), (15, 1426868), (20, 1070151), (30, 713434), (31, 690420), (37, 578460), (60, 356717), (62, 345210), (74, 289230), (93, 230140), (111, 192820), (124, 172605), (148, 144615), (155, 138084), (185, 115692), (186, 115070), (222, 96410), (310, 69042), (311, 68820), (370, 57846), (372, 57535), (444, 48205), (465, 46028), (555, 38564), (620, 34521), (622, 34410), (740, 28923), (930, 23014), (933, 22940), (1110, 19282), (1147, 18660), (1244, 17205), (1555, 13764), (1860, 11507), (1866, 11470), (2220, 9641), (2294, 9330), (3110, 6882), (3441, 6220), (3732, 5735), (4588, 4665)]