21040020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{829}}^1$

素因数の和:894

約数の個数: 96

約数和(自身を含む): 66931200

約数和(自身を除く): 45891180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 47, 54, 60, 90, 94, 108, 135, 141, 180, 188, 235, 270, 282, 423, 470, 540, 564, 705, 829, 846, 940, 1269, 1410, 1658, 1692, 2115, 2487, 2538, 2820, 3316, 4145, 4230, 4974, 5076, 6345, 7461, 8290, 8460, 9948, 12435, 12690, 14922, 16580, 22383, 24870, 25380, 29844, 37305, 38963, 44766, 49740, 74610, 77926, 89532, 111915, 116889, 149220, 155852, 194815, 223830, 233778, 350667, 389630, 447660, 467556, 584445, 701334, 779260, 1052001, 1168890, 1402668, 1753335, 2104002, 2337780, 3506670, 4208004, 5260005, 7013340, 10520010, 21040020]

約数ペア:

[(1, 21040020), (2, 10520010), (3, 7013340), (4, 5260005), (5, 4208004), (6, 3506670), (9, 2337780), (10, 2104002), (12, 1753335), (15, 1402668), (18, 1168890), (20, 1052001), (27, 779260), (30, 701334), (36, 584445), (45, 467556), (47, 447660), (54, 389630), (60, 350667), (90, 233778), (94, 223830), (108, 194815), (135, 155852), (141, 149220), (180, 116889), (188, 111915), (235, 89532), (270, 77926), (282, 74610), (423, 49740), (470, 44766), (540, 38963), (564, 37305), (705, 29844), (829, 25380), (846, 24870), (940, 22383), (1269, 16580), (1410, 14922), (1658, 12690), (1692, 12435), (2115, 9948), (2487, 8460), (2538, 8290), (2820, 7461), (3316, 6345), (4145, 5076), (4230, 4974)]