81138780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:217

約数の個数: 192

約数和(自身を含む): 269660160

約数和(自身を除く): 188521380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 37, 45, 54, 60, 62, 74, 90, 93, 108, 111, 124, 131, 135, 148, 155, 180, 185, 186, 222, 262, 270, 279, 310, 333, 370, 372, 393, 444, 465, 524, 540, 555, 558, 620, 655, 666, 740, 786, 837, 930, 999, 1110, 1116, 1147, 1179, 1310, 1332, 1395, 1572, 1665, 1674, 1860, 1965, 1998, 2220, 2294, 2358, 2620, 2790, 3330, 3348, 3441, 3537, 3930, 3996, 4061, 4185, 4588, 4716, 4847, 4995, 5580, 5735, 5895, 6660, 6882, 7074, 7860, 8122, 8370, 9694, 9990, 10323, 11470, 11790, 12183, 13764, 14148, 14541, 16244, 16740, 17205, 17685, 19388, 19980, 20305, 20646, 22940, 23580, 24235, 24366, 29082, 30969, 34410, 35370, 36549, 40610, 41292, 43623, 48470, 48732, 51615, 58164, 60915, 61938, 68820, 70740, 72705, 73098, 81220, 87246, 96940, 103230, 109647, 121830, 123876, 130869, 145410, 146196, 150257, 154845, 174492, 182745, 206460, 218115, 219294, 243660, 261738, 290820, 300514, 309690, 365490, 436230, 438588, 450771, 523476, 548235, 601028, 619380, 654345, 730980, 751285, 872460, 901542, 1096470, 1308690, 1352313, 1502570, 1803084, 2192940, 2253855, 2617380, 2704626, 3005140, 4056939, 4507710, 5409252, 6761565, 8113878, 9015420, 13523130, 16227756, 20284695, 27046260, 40569390, 81138780]

約数ペア:

[(1, 81138780), (2, 40569390), (3, 27046260), (4, 20284695), (5, 16227756), (6, 13523130), (9, 9015420), (10, 8113878), (12, 6761565), (15, 5409252), (18, 4507710), (20, 4056939), (27, 3005140), (30, 2704626), (31, 2617380), (36, 2253855), (37, 2192940), (45, 1803084), (54, 1502570), (60, 1352313), (62, 1308690), (74, 1096470), (90, 901542), (93, 872460), (108, 751285), (111, 730980), (124, 654345), (131, 619380), (135, 601028), (148, 548235), (155, 523476), (180, 450771), (185, 438588), (186, 436230), (222, 365490), (262, 309690), (270, 300514), (279, 290820), (310, 261738), (333, 243660), (370, 219294), (372, 218115), (393, 206460), (444, 182745), (465, 174492), (524, 154845), (540, 150257), (555, 146196), (558, 145410), (620, 130869), (655, 123876), (666, 121830), (740, 109647), (786, 103230), (837, 96940), (930, 87246), (999, 81220), (1110, 73098), (1116, 72705), (1147, 70740), (1179, 68820), (1310, 61938), (1332, 60915), (1395, 58164), (1572, 51615), (1665, 48732), (1674, 48470), (1860, 43623), (1965, 41292), (1998, 40610), (2220, 36549), (2294, 35370), (2358, 34410), (2620, 30969), (2790, 29082), (3330, 24366), (3348, 24235), (3441, 23580), (3537, 22940), (3930, 20646), (3996, 20305), (4061, 19980), (4185, 19388), (4588, 17685), (4716, 17205), (4847, 16740), (4995, 16244), (5580, 14541), (5735, 14148), (5895, 13764), (6660, 12183), (6882, 11790), (7074, 11470), (7860, 10323), (8122, 9990), (8370, 9694)]