21756910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4639}}^1$

素因数の和:4720

約数の個数: 32

約数和(自身を含む): 45434880

約数和(自身を除く): 23677970

約数列:

[1, 2, 5, 7, 10, 14, 35, 67, 70, 134, 335, 469, 670, 938, 2345, 4639, 4690, 9278, 23195, 32473, 46390, 64946, 162365, 310813, 324730, 621626, 1554065, 2175691, 3108130, 4351382, 10878455, 21756910]

約数ペア:

[(1, 21756910), (2, 10878455), (5, 4351382), (7, 3108130), (10, 2175691), (14, 1554065), (35, 621626), (67, 324730), (70, 310813), (134, 162365), (335, 64946), (469, 46390), (670, 32473), (938, 23195), (2345, 9278), (4639, 4690)]