21688600

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{6379}}^1$

素因数の和:6412

約数の個数: 48

約数和(自身を含む): 53400600

約数和(自身を除く): 31712000

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 136, 170, 200, 340, 425, 680, 850, 1700, 3400, 6379, 12758, 25516, 31895, 51032, 63790, 108443, 127580, 159475, 216886, 255160, 318950, 433772, 542215, 637900, 867544, 1084430, 1275800, 2168860, 2711075, 4337720, 5422150, 10844300, 21688600]

約数ペア:

[(1, 21688600), (2, 10844300), (4, 5422150), (5, 4337720), (8, 2711075), (10, 2168860), (17, 1275800), (20, 1084430), (25, 867544), (34, 637900), (40, 542215), (50, 433772), (68, 318950), (85, 255160), (100, 216886), (136, 159475), (170, 127580), (200, 108443), (340, 63790), (425, 51032), (680, 31895), (850, 25516), (1700, 12758), (3400, 6379)]