40720990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{2003}}^1$

素因数の和:2136

約数の個数: 32

約数和(自身を含む): 77915520

約数和(自身を除く): 37194530

約数列:

[1, 2, 5, 10, 19, 38, 95, 107, 190, 214, 535, 1070, 2003, 2033, 4006, 4066, 10015, 10165, 20030, 20330, 38057, 76114, 190285, 214321, 380570, 428642, 1071605, 2143210, 4072099, 8144198, 20360495, 40720990]

約数ペア:

[(1, 40720990), (2, 20360495), (5, 8144198), (10, 4072099), (19, 2143210), (38, 1071605), (95, 428642), (107, 380570), (190, 214321), (214, 190285), (535, 76114), (1070, 38057), (2003, 20330), (2033, 20030), (4006, 10165), (4066, 10015)]