20721621310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{907}}^1$

素因数の和:1098

約数の個数: 128

約数和(自身を含む): 42446283264

約数和(自身を除く): 21724661954

約数列:

[1, 2, 5, 10, 13, 26, 43, 61, 65, 67, 86, 122, 130, 134, 215, 305, 335, 430, 559, 610, 670, 793, 871, 907, 1118, 1586, 1742, 1814, 2623, 2795, 2881, 3965, 4087, 4355, 4535, 5246, 5590, 5762, 7930, 8174, 8710, 9070, 11791, 13115, 14405, 20435, 23582, 26230, 28810, 34099, 37453, 39001, 40870, 53131, 55327, 58955, 60769, 68198, 74906, 78002, 106262, 110654, 117910, 121538, 170495, 175741, 187265, 195005, 265655, 276635, 303845, 340990, 351482, 374530, 390010, 507013, 531310, 553270, 607690, 719251, 789997, 878705, 1014026, 1438502, 1579994, 1757410, 2284633, 2379061, 2535065, 2613067, 3596255, 3706909, 3949985, 4569266, 4758122, 5070130, 5226134, 7192510, 7413818, 7899970, 11423165, 11895305, 13065335, 18534545, 22846330, 23790610, 26130670, 30927793, 33969871, 37069090, 48189817, 61855586, 67939742, 96379634, 154638965, 159397087, 169849355, 240949085, 309277930, 318794174, 339698710, 481898170, 796985435, 1593970870, 2072162131, 4144324262, 10360810655, 20721621310]

約数ペア:

[(1, 20721621310), (2, 10360810655), (5, 4144324262), (10, 2072162131), (13, 1593970870), (26, 796985435), (43, 481898170), (61, 339698710), (65, 318794174), (67, 309277930), (86, 240949085), (122, 169849355), (130, 159397087), (134, 154638965), (215, 96379634), (305, 67939742), (335, 61855586), (430, 48189817), (559, 37069090), (610, 33969871), (670, 30927793), (793, 26130670), (871, 23790610), (907, 22846330), (1118, 18534545), (1586, 13065335), (1742, 11895305), (1814, 11423165), (2623, 7899970), (2795, 7413818), (2881, 7192510), (3965, 5226134), (4087, 5070130), (4355, 4758122), (4535, 4569266), (5246, 3949985), (5590, 3706909), (5762, 3596255), (7930, 2613067), (8174, 2535065), (8710, 2379061), (9070, 2284633), (11791, 1757410), (13115, 1579994), (14405, 1438502), (20435, 1014026), (23582, 878705), (26230, 789997), (28810, 719251), (34099, 607690), (37453, 553270), (39001, 531310), (40870, 507013), (53131, 390010), (55327, 374530), (58955, 351482), (60769, 340990), (68198, 303845), (74906, 276635), (78002, 265655), (106262, 195005), (110654, 187265), (117910, 175741), (121538, 170495)]