20395410

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:260

約数の個数: 128

約数和(自身を含む): 61585920

約数和(自身を除く): 41190510

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 29, 30, 34, 35, 42, 51, 58, 70, 85, 87, 102, 105, 119, 145, 170, 174, 197, 203, 210, 238, 255, 290, 357, 394, 406, 435, 493, 510, 591, 595, 609, 714, 870, 985, 986, 1015, 1182, 1190, 1218, 1379, 1479, 1785, 1970, 2030, 2465, 2758, 2955, 2958, 3045, 3349, 3451, 3570, 4137, 4930, 5713, 5910, 6090, 6698, 6895, 6902, 7395, 8274, 10047, 10353, 11426, 13790, 14790, 16745, 17139, 17255, 20094, 20685, 20706, 23443, 28565, 33490, 34278, 34510, 39991, 41370, 46886, 50235, 51765, 57130, 70329, 79982, 85695, 97121, 100470, 103530, 117215, 119973, 140658, 171390, 194242, 199955, 234430, 239946, 291363, 351645, 399910, 485605, 582726, 599865, 679847, 703290, 971210, 1199730, 1359694, 1456815, 2039541, 2913630, 3399235, 4079082, 6798470, 10197705, 20395410]

約数ペア:

[(1, 20395410), (2, 10197705), (3, 6798470), (5, 4079082), (6, 3399235), (7, 2913630), (10, 2039541), (14, 1456815), (15, 1359694), (17, 1199730), (21, 971210), (29, 703290), (30, 679847), (34, 599865), (35, 582726), (42, 485605), (51, 399910), (58, 351645), (70, 291363), (85, 239946), (87, 234430), (102, 199955), (105, 194242), (119, 171390), (145, 140658), (170, 119973), (174, 117215), (197, 103530), (203, 100470), (210, 97121), (238, 85695), (255, 79982), (290, 70329), (357, 57130), (394, 51765), (406, 50235), (435, 46886), (493, 41370), (510, 39991), (591, 34510), (595, 34278), (609, 33490), (714, 28565), (870, 23443), (985, 20706), (986, 20685), (1015, 20094), (1182, 17255), (1190, 17139), (1218, 16745), (1379, 14790), (1479, 13790), (1785, 11426), (1970, 10353), (2030, 10047), (2465, 8274), (2758, 7395), (2955, 6902), (2958, 6895), (3045, 6698), (3349, 6090), (3451, 5910), (3570, 5713), (4137, 4930)]