19923040

素因数分解:

$2^5\times 5^1\times {\mathrm{239}}^1\times {\mathrm{521}}^1$

素因数の和:775

約数の個数: 48

約数和(自身を含む): 47355840

約数和(自身を除く): 27432800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 239, 478, 521, 956, 1042, 1195, 1912, 2084, 2390, 2605, 3824, 4168, 4780, 5210, 7648, 8336, 9560, 10420, 16672, 19120, 20840, 38240, 41680, 83360, 124519, 249038, 498076, 622595, 996152, 1245190, 1992304, 2490380, 3984608, 4980760, 9961520, 19923040]

約数ペア:

[(1, 19923040), (2, 9961520), (4, 4980760), (5, 3984608), (8, 2490380), (10, 1992304), (16, 1245190), (20, 996152), (32, 622595), (40, 498076), (80, 249038), (160, 124519), (239, 83360), (478, 41680), (521, 38240), (956, 20840), (1042, 19120), (1195, 16672), (1912, 10420), (2084, 9560), (2390, 8336), (2605, 7648), (3824, 5210), (4168, 4780)]