20393350

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 39997440

約数和(自身を除く): 19604090

約数列:

[1, 2, 5, 10, 25, 31, 50, 59, 62, 118, 155, 223, 295, 310, 446, 590, 775, 1115, 1475, 1550, 1829, 2230, 2950, 3658, 5575, 6913, 9145, 11150, 13157, 13826, 18290, 26314, 34565, 45725, 65785, 69130, 91450, 131570, 172825, 328925, 345650, 407867, 657850, 815734, 2039335, 4078670, 10196675, 20393350]

約数ペア:

[(1, 20393350), (2, 10196675), (5, 4078670), (10, 2039335), (25, 815734), (31, 657850), (50, 407867), (59, 345650), (62, 328925), (118, 172825), (155, 131570), (223, 91450), (295, 69130), (310, 65785), (446, 45725), (590, 34565), (775, 26314), (1115, 18290), (1475, 13826), (1550, 13157), (1829, 11150), (2230, 9145), (2950, 6913), (3658, 5575)]