21072870

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:147

約数の個数: 192

約数和(自身を含む): 70447104

約数和(自身を除く): 49374234

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 30, 31, 35, 39, 42, 45, 62, 63, 65, 70, 78, 83, 90, 91, 93, 105, 117, 126, 130, 155, 166, 182, 186, 195, 210, 217, 234, 249, 273, 279, 310, 315, 390, 403, 415, 434, 455, 465, 498, 546, 558, 581, 585, 630, 651, 747, 806, 819, 830, 910, 930, 1079, 1085, 1162, 1170, 1209, 1245, 1302, 1365, 1395, 1494, 1638, 1743, 1953, 2015, 2158, 2170, 2418, 2490, 2573, 2730, 2790, 2821, 2905, 3237, 3255, 3486, 3627, 3735, 3906, 4030, 4095, 5146, 5229, 5395, 5642, 5810, 6045, 6474, 6510, 7254, 7470, 7553, 7719, 8190, 8463, 8715, 9711, 9765, 10458, 10790, 12090, 12865, 14105, 15106, 15438, 16185, 16926, 17430, 18011, 18135, 19422, 19530, 22659, 23157, 25389, 25730, 26145, 28210, 32370, 33449, 36022, 36270, 37765, 38595, 42315, 45318, 46314, 48555, 50778, 52290, 54033, 66898, 67977, 75530, 77190, 84630, 90055, 97110, 100347, 108066, 113295, 115785, 126945, 135954, 162099, 167245, 180110, 200694, 226590, 231570, 234143, 253890, 270165, 301041, 324198, 334490, 339885, 468286, 501735, 540330, 602082, 679770, 702429, 810495, 1003470, 1170715, 1404858, 1505205, 1620990, 2107287, 2341430, 3010410, 3512145, 4214574, 7024290, 10536435, 21072870]

約数ペア:

[(1, 21072870), (2, 10536435), (3, 7024290), (5, 4214574), (6, 3512145), (7, 3010410), (9, 2341430), (10, 2107287), (13, 1620990), (14, 1505205), (15, 1404858), (18, 1170715), (21, 1003470), (26, 810495), (30, 702429), (31, 679770), (35, 602082), (39, 540330), (42, 501735), (45, 468286), (62, 339885), (63, 334490), (65, 324198), (70, 301041), (78, 270165), (83, 253890), (90, 234143), (91, 231570), (93, 226590), (105, 200694), (117, 180110), (126, 167245), (130, 162099), (155, 135954), (166, 126945), (182, 115785), (186, 113295), (195, 108066), (210, 100347), (217, 97110), (234, 90055), (249, 84630), (273, 77190), (279, 75530), (310, 67977), (315, 66898), (390, 54033), (403, 52290), (415, 50778), (434, 48555), (455, 46314), (465, 45318), (498, 42315), (546, 38595), (558, 37765), (581, 36270), (585, 36022), (630, 33449), (651, 32370), (747, 28210), (806, 26145), (819, 25730), (830, 25389), (910, 23157), (930, 22659), (1079, 19530), (1085, 19422), (1162, 18135), (1170, 18011), (1209, 17430), (1245, 16926), (1302, 16185), (1365, 15438), (1395, 15106), (1494, 14105), (1638, 12865), (1743, 12090), (1953, 10790), (2015, 10458), (2158, 9765), (2170, 9711), (2418, 8715), (2490, 8463), (2573, 8190), (2730, 7719), (2790, 7553), (2821, 7470), (2905, 7254), (3237, 6510), (3255, 6474), (3486, 6045), (3627, 5810), (3735, 5642), (3906, 5395), (4030, 5229), (4095, 5146)]