20699940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{359}}^1$

素因数の和:433

約数の個数: 72

約数和(自身を含む): 60056640

約数和(自身を除く): 39356700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 359, 372, 465, 620, 718, 930, 961, 1077, 1436, 1795, 1860, 1922, 2154, 2883, 3590, 3844, 4308, 4805, 5385, 5766, 7180, 9610, 10770, 11129, 11532, 14415, 19220, 21540, 22258, 28830, 33387, 44516, 55645, 57660, 66774, 111290, 133548, 166935, 222580, 333870, 344999, 667740, 689998, 1034997, 1379996, 1724995, 2069994, 3449990, 4139988, 5174985, 6899980, 10349970, 20699940]

約数ペア:

[(1, 20699940), (2, 10349970), (3, 6899980), (4, 5174985), (5, 4139988), (6, 3449990), (10, 2069994), (12, 1724995), (15, 1379996), (20, 1034997), (30, 689998), (31, 667740), (60, 344999), (62, 333870), (93, 222580), (124, 166935), (155, 133548), (186, 111290), (310, 66774), (359, 57660), (372, 55645), (465, 44516), (620, 33387), (718, 28830), (930, 22258), (961, 21540), (1077, 19220), (1436, 14415), (1795, 11532), (1860, 11129), (1922, 10770), (2154, 9610), (2883, 7180), (3590, 5766), (3844, 5385), (4308, 4805)]