21406740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{677}}^1$

素因数の和:737

約数の個数: 96

約数和(自身を含む): 65608704

約数和(自身を除く): 44201964

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 31, 34, 51, 60, 62, 68, 85, 93, 102, 124, 155, 170, 186, 204, 255, 310, 340, 372, 465, 510, 527, 620, 677, 930, 1020, 1054, 1354, 1581, 1860, 2031, 2108, 2635, 2708, 3162, 3385, 4062, 5270, 6324, 6770, 7905, 8124, 10155, 10540, 11509, 13540, 15810, 20310, 20987, 23018, 31620, 34527, 40620, 41974, 46036, 57545, 62961, 69054, 83948, 104935, 115090, 125922, 138108, 172635, 209870, 230180, 251844, 314805, 345270, 356779, 419740, 629610, 690540, 713558, 1070337, 1259220, 1427116, 1783895, 2140674, 3567790, 4281348, 5351685, 7135580, 10703370, 21406740]

約数ペア:

[(1, 21406740), (2, 10703370), (3, 7135580), (4, 5351685), (5, 4281348), (6, 3567790), (10, 2140674), (12, 1783895), (15, 1427116), (17, 1259220), (20, 1070337), (30, 713558), (31, 690540), (34, 629610), (51, 419740), (60, 356779), (62, 345270), (68, 314805), (85, 251844), (93, 230180), (102, 209870), (124, 172635), (155, 138108), (170, 125922), (186, 115090), (204, 104935), (255, 83948), (310, 69054), (340, 62961), (372, 57545), (465, 46036), (510, 41974), (527, 40620), (620, 34527), (677, 31620), (930, 23018), (1020, 20987), (1054, 20310), (1354, 15810), (1581, 13540), (1860, 11509), (2031, 10540), (2108, 10155), (2635, 8124), (2708, 7905), (3162, 6770), (3385, 6324), (4062, 5270)]