18818940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:236

約数の個数: 144

約数和(自身を含む): 63316512

約数和(自身を除く): 44497572

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 37, 42, 49, 60, 70, 74, 84, 98, 105, 111, 140, 147, 148, 173, 185, 196, 210, 222, 245, 259, 294, 346, 370, 420, 444, 490, 518, 519, 555, 588, 692, 735, 740, 777, 865, 980, 1036, 1038, 1110, 1211, 1295, 1470, 1554, 1730, 1813, 2076, 2220, 2422, 2590, 2595, 2940, 3108, 3460, 3626, 3633, 3885, 4844, 5180, 5190, 5439, 6055, 6401, 7252, 7266, 7770, 8477, 9065, 10380, 10878, 12110, 12802, 14532, 15540, 16954, 18130, 18165, 19203, 21756, 24220, 25431, 25604, 27195, 32005, 33908, 36260, 36330, 38406, 42385, 44807, 50862, 54390, 64010, 72660, 76812, 84770, 89614, 96015, 101724, 108780, 127155, 128020, 134421, 169540, 179228, 192030, 224035, 254310, 268842, 313649, 384060, 448070, 508620, 537684, 627298, 672105, 896140, 940947, 1254596, 1344210, 1568245, 1881894, 2688420, 3136490, 3763788, 4704735, 6272980, 9409470, 18818940]

約数ペア:

[(1, 18818940), (2, 9409470), (3, 6272980), (4, 4704735), (5, 3763788), (6, 3136490), (7, 2688420), (10, 1881894), (12, 1568245), (14, 1344210), (15, 1254596), (20, 940947), (21, 896140), (28, 672105), (30, 627298), (35, 537684), (37, 508620), (42, 448070), (49, 384060), (60, 313649), (70, 268842), (74, 254310), (84, 224035), (98, 192030), (105, 179228), (111, 169540), (140, 134421), (147, 128020), (148, 127155), (173, 108780), (185, 101724), (196, 96015), (210, 89614), (222, 84770), (245, 76812), (259, 72660), (294, 64010), (346, 54390), (370, 50862), (420, 44807), (444, 42385), (490, 38406), (518, 36330), (519, 36260), (555, 33908), (588, 32005), (692, 27195), (735, 25604), (740, 25431), (777, 24220), (865, 21756), (980, 19203), (1036, 18165), (1038, 18130), (1110, 16954), (1211, 15540), (1295, 14532), (1470, 12802), (1554, 12110), (1730, 10878), (1813, 10380), (2076, 9065), (2220, 8477), (2422, 7770), (2590, 7266), (2595, 7252), (2940, 6401), (3108, 6055), (3460, 5439), (3626, 5190), (3633, 5180), (3885, 4844)]