19885140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{83}}^1$

素因数の和:131

約数の個数: 144

約数和(自身を含む): 67144896

約数和(自身を除く): 47259756

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 83, 90, 99, 110, 121, 132, 165, 166, 180, 198, 220, 242, 249, 330, 332, 363, 396, 415, 484, 495, 498, 605, 660, 726, 747, 830, 913, 990, 996, 1089, 1210, 1245, 1331, 1452, 1494, 1660, 1815, 1826, 1980, 2178, 2420, 2490, 2662, 2739, 2988, 3630, 3652, 3735, 3993, 4356, 4565, 4980, 5324, 5445, 5478, 6655, 7260, 7470, 7986, 8217, 9130, 10043, 10890, 10956, 11979, 13310, 13695, 14940, 15972, 16434, 18260, 19965, 20086, 21780, 23958, 26620, 27390, 30129, 32868, 39930, 40172, 41085, 47916, 50215, 54780, 59895, 60258, 79860, 82170, 90387, 100430, 110473, 119790, 120516, 150645, 164340, 180774, 200860, 220946, 239580, 301290, 331419, 361548, 441892, 451935, 552365, 602580, 662838, 903870, 994257, 1104730, 1325676, 1657095, 1807740, 1988514, 2209460, 3314190, 3977028, 4971285, 6628380, 9942570, 19885140]

約数ペア:

[(1, 19885140), (2, 9942570), (3, 6628380), (4, 4971285), (5, 3977028), (6, 3314190), (9, 2209460), (10, 1988514), (11, 1807740), (12, 1657095), (15, 1325676), (18, 1104730), (20, 994257), (22, 903870), (30, 662838), (33, 602580), (36, 552365), (44, 451935), (45, 441892), (55, 361548), (60, 331419), (66, 301290), (83, 239580), (90, 220946), (99, 200860), (110, 180774), (121, 164340), (132, 150645), (165, 120516), (166, 119790), (180, 110473), (198, 100430), (220, 90387), (242, 82170), (249, 79860), (330, 60258), (332, 59895), (363, 54780), (396, 50215), (415, 47916), (484, 41085), (495, 40172), (498, 39930), (605, 32868), (660, 30129), (726, 27390), (747, 26620), (830, 23958), (913, 21780), (990, 20086), (996, 19965), (1089, 18260), (1210, 16434), (1245, 15972), (1331, 14940), (1452, 13695), (1494, 13310), (1660, 11979), (1815, 10956), (1826, 10890), (1980, 10043), (2178, 9130), (2420, 8217), (2490, 7986), (2662, 7470), (2739, 7260), (2988, 6655), (3630, 5478), (3652, 5445), (3735, 5324), (3993, 4980), (4356, 4565)]