4157777980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{21001}}^1$

素因数の和:21550

約数の個数: 48

約数和(自身を含む): 9208956960

約数和(自身を除く): 5051178980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 521, 1042, 2084, 2605, 5210, 9899, 10420, 19798, 21001, 39596, 42002, 49495, 84004, 98990, 105005, 197980, 210010, 399019, 420020, 798038, 1596076, 1995095, 3990190, 7980380, 10941521, 21883042, 43766084, 54707605, 109415210, 207888899, 218830420, 415777798, 831555596, 1039444495, 2078888990, 4157777980]

約数ペア:

[(1, 4157777980), (2, 2078888990), (4, 1039444495), (5, 831555596), (10, 415777798), (19, 218830420), (20, 207888899), (38, 109415210), (76, 54707605), (95, 43766084), (190, 21883042), (380, 10941521), (521, 7980380), (1042, 3990190), (2084, 1995095), (2605, 1596076), (5210, 798038), (9899, 420020), (10420, 399019), (19798, 210010), (21001, 197980), (39596, 105005), (42002, 98990), (49495, 84004)]