21505148880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{78121}}^1$

素因数の和:78205

約数の個数: 160

約数和(自身を含む): 70677285888

約数和(自身を除く): 49172137008

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 37, 40, 48, 60, 62, 74, 80, 93, 111, 120, 124, 148, 155, 185, 186, 222, 240, 248, 296, 310, 370, 372, 444, 465, 496, 555, 592, 620, 740, 744, 888, 930, 1110, 1147, 1240, 1480, 1488, 1776, 1860, 2220, 2294, 2480, 2960, 3441, 3720, 4440, 4588, 5735, 6882, 7440, 8880, 9176, 11470, 13764, 17205, 18352, 22940, 27528, 34410, 45880, 55056, 68820, 78121, 91760, 137640, 156242, 234363, 275280, 312484, 390605, 468726, 624968, 781210, 937452, 1171815, 1249936, 1562420, 1874904, 2343630, 2421751, 2890477, 3124840, 3749808, 4687260, 4843502, 5780954, 6249680, 7265253, 8671431, 9374520, 9687004, 11561908, 12108755, 14452385, 14530506, 17342862, 18749040, 19374008, 23123816, 24217510, 28904770, 29061012, 34685724, 36326265, 38748016, 43357155, 46247632, 48435020, 57809540, 58122024, 69371448, 72652530, 86714310, 89604787, 96870040, 115619080, 116244048, 138742896, 145305060, 173428620, 179209574, 193740080, 231238160, 268814361, 290610120, 346857240, 358419148, 448023935, 537628722, 581220240, 693714480, 716838296, 896047870, 1075257444, 1344071805, 1433676592, 1792095740, 2150514888, 2688143610, 3584191480, 4301029776, 5376287220, 7168382960, 10752574440, 21505148880]

約数ペア:

[(1, 21505148880), (2, 10752574440), (3, 7168382960), (4, 5376287220), (5, 4301029776), (6, 3584191480), (8, 2688143610), (10, 2150514888), (12, 1792095740), (15, 1433676592), (16, 1344071805), (20, 1075257444), (24, 896047870), (30, 716838296), (31, 693714480), (37, 581220240), (40, 537628722), (48, 448023935), (60, 358419148), (62, 346857240), (74, 290610120), (80, 268814361), (93, 231238160), (111, 193740080), (120, 179209574), (124, 173428620), (148, 145305060), (155, 138742896), (185, 116244048), (186, 115619080), (222, 96870040), (240, 89604787), (248, 86714310), (296, 72652530), (310, 69371448), (370, 58122024), (372, 57809540), (444, 48435020), (465, 46247632), (496, 43357155), (555, 38748016), (592, 36326265), (620, 34685724), (740, 29061012), (744, 28904770), (888, 24217510), (930, 23123816), (1110, 19374008), (1147, 18749040), (1240, 17342862), (1480, 14530506), (1488, 14452385), (1776, 12108755), (1860, 11561908), (2220, 9687004), (2294, 9374520), (2480, 8671431), (2960, 7265253), (3441, 6249680), (3720, 5780954), (4440, 4843502), (4588, 4687260), (5735, 3749808), (6882, 3124840), (7440, 2890477), (8880, 2421751), (9176, 2343630), (11470, 1874904), (13764, 1562420), (17205, 1249936), (18352, 1171815), (22940, 937452), (27528, 781210), (34410, 624968), (45880, 468726), (55056, 390605), (68820, 312484), (78121, 275280), (91760, 234363), (137640, 156242)]