18786780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:164

約数の個数: 144

約数和(自身を含む): 60933600

約数和(自身を除く): 42146820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 59, 60, 61, 87, 90, 116, 118, 122, 145, 174, 177, 180, 183, 236, 244, 261, 290, 295, 305, 348, 354, 366, 435, 522, 531, 549, 580, 590, 610, 708, 732, 870, 885, 915, 1044, 1062, 1098, 1180, 1220, 1305, 1711, 1740, 1769, 1770, 1830, 2124, 2196, 2610, 2655, 2745, 3422, 3538, 3540, 3599, 3660, 5133, 5220, 5307, 5310, 5490, 6844, 7076, 7198, 8555, 8845, 10266, 10614, 10620, 10797, 10980, 14396, 15399, 15921, 17110, 17690, 17995, 20532, 21228, 21594, 25665, 26535, 30798, 31842, 32391, 34220, 35380, 35990, 43188, 51330, 53070, 53985, 61596, 63684, 64782, 71980, 76995, 79605, 102660, 104371, 106140, 107970, 129564, 153990, 159210, 161955, 208742, 215940, 307980, 313113, 318420, 323910, 417484, 521855, 626226, 647820, 939339, 1043710, 1252452, 1565565, 1878678, 2087420, 3131130, 3757356, 4696695, 6262260, 9393390, 18786780]

約数ペア:

[(1, 18786780), (2, 9393390), (3, 6262260), (4, 4696695), (5, 3757356), (6, 3131130), (9, 2087420), (10, 1878678), (12, 1565565), (15, 1252452), (18, 1043710), (20, 939339), (29, 647820), (30, 626226), (36, 521855), (45, 417484), (58, 323910), (59, 318420), (60, 313113), (61, 307980), (87, 215940), (90, 208742), (116, 161955), (118, 159210), (122, 153990), (145, 129564), (174, 107970), (177, 106140), (180, 104371), (183, 102660), (236, 79605), (244, 76995), (261, 71980), (290, 64782), (295, 63684), (305, 61596), (348, 53985), (354, 53070), (366, 51330), (435, 43188), (522, 35990), (531, 35380), (549, 34220), (580, 32391), (590, 31842), (610, 30798), (708, 26535), (732, 25665), (870, 21594), (885, 21228), (915, 20532), (1044, 17995), (1062, 17690), (1098, 17110), (1180, 15921), (1220, 15399), (1305, 14396), (1711, 10980), (1740, 10797), (1769, 10620), (1770, 10614), (1830, 10266), (2124, 8845), (2196, 8555), (2610, 7198), (2655, 7076), (2745, 6844), (3422, 5490), (3538, 5310), (3540, 5307), (3599, 5220), (3660, 5133)]