21375270

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:195

約数の個数: 144

約数和(自身を含む): 66903408

約数和(自身を除く): 45528138

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 37, 42, 45, 49, 63, 70, 74, 90, 98, 105, 111, 126, 131, 147, 185, 210, 222, 245, 259, 262, 294, 315, 333, 370, 393, 441, 490, 518, 555, 630, 655, 666, 735, 777, 786, 882, 917, 1110, 1179, 1295, 1310, 1470, 1554, 1665, 1813, 1834, 1965, 2205, 2331, 2358, 2590, 2751, 3330, 3626, 3885, 3930, 4410, 4585, 4662, 4847, 5439, 5502, 5895, 6419, 7770, 8253, 9065, 9170, 9694, 10878, 11655, 11790, 12838, 13755, 14541, 16317, 16506, 18130, 19257, 23310, 24235, 27195, 27510, 29082, 32095, 32634, 33929, 38514, 41265, 43623, 48470, 54390, 57771, 64190, 67858, 72705, 81585, 82530, 87246, 96285, 101787, 115542, 145410, 163170, 169645, 192570, 203574, 218115, 237503, 288855, 305361, 339290, 436230, 475006, 508935, 577710, 610722, 712509, 1017870, 1187515, 1425018, 1526805, 2137527, 2375030, 3053610, 3562545, 4275054, 7125090, 10687635, 21375270]

約数ペア:

[(1, 21375270), (2, 10687635), (3, 7125090), (5, 4275054), (6, 3562545), (7, 3053610), (9, 2375030), (10, 2137527), (14, 1526805), (15, 1425018), (18, 1187515), (21, 1017870), (30, 712509), (35, 610722), (37, 577710), (42, 508935), (45, 475006), (49, 436230), (63, 339290), (70, 305361), (74, 288855), (90, 237503), (98, 218115), (105, 203574), (111, 192570), (126, 169645), (131, 163170), (147, 145410), (185, 115542), (210, 101787), (222, 96285), (245, 87246), (259, 82530), (262, 81585), (294, 72705), (315, 67858), (333, 64190), (370, 57771), (393, 54390), (441, 48470), (490, 43623), (518, 41265), (555, 38514), (630, 33929), (655, 32634), (666, 32095), (735, 29082), (777, 27510), (786, 27195), (882, 24235), (917, 23310), (1110, 19257), (1179, 18130), (1295, 16506), (1310, 16317), (1470, 14541), (1554, 13755), (1665, 12838), (1813, 11790), (1834, 11655), (1965, 10878), (2205, 9694), (2331, 9170), (2358, 9065), (2590, 8253), (2751, 7770), (3330, 6419), (3626, 5895), (3885, 5502), (3930, 5439), (4410, 4847), (4585, 4662)]