16891980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1087}}^1$

素因数の和:1143

約数の個数: 96

約数和(自身を含む): 55566336

約数和(自身を除く): 38674356

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 37, 42, 60, 70, 74, 84, 105, 111, 140, 148, 185, 210, 222, 259, 370, 420, 444, 518, 555, 740, 777, 1036, 1087, 1110, 1295, 1554, 2174, 2220, 2590, 3108, 3261, 3885, 4348, 5180, 5435, 6522, 7609, 7770, 10870, 13044, 15218, 15540, 16305, 21740, 22827, 30436, 32610, 38045, 40219, 45654, 65220, 76090, 80438, 91308, 114135, 120657, 152180, 160876, 201095, 228270, 241314, 281533, 402190, 456540, 482628, 563066, 603285, 804380, 844599, 1126132, 1206570, 1407665, 1689198, 2413140, 2815330, 3378396, 4222995, 5630660, 8445990, 16891980]

約数ペア:

[(1, 16891980), (2, 8445990), (3, 5630660), (4, 4222995), (5, 3378396), (6, 2815330), (7, 2413140), (10, 1689198), (12, 1407665), (14, 1206570), (15, 1126132), (20, 844599), (21, 804380), (28, 603285), (30, 563066), (35, 482628), (37, 456540), (42, 402190), (60, 281533), (70, 241314), (74, 228270), (84, 201095), (105, 160876), (111, 152180), (140, 120657), (148, 114135), (185, 91308), (210, 80438), (222, 76090), (259, 65220), (370, 45654), (420, 40219), (444, 38045), (518, 32610), (555, 30436), (740, 22827), (777, 21740), (1036, 16305), (1087, 15540), (1110, 15218), (1295, 13044), (1554, 10870), (2174, 7770), (2220, 7609), (2590, 6522), (3108, 5435), (3261, 5180), (3885, 4348)]