1640781670

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{829}}^1\times {\mathrm{947}}^1$

素因数の和:1813

約数の個数: 64

約数和(自身を含む): 3399148800

約数和(自身を除く): 1758367130

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 829, 947, 1045, 1658, 1894, 2090, 4145, 4735, 8290, 9119, 9470, 10417, 15751, 17993, 18238, 20834, 31502, 35986, 45595, 52085, 78755, 89965, 91190, 104170, 157510, 173261, 179930, 197923, 346522, 395846, 785063, 866305, 989615, 1570126, 1732610, 1979230, 3925315, 7850630, 8635693, 14916197, 17271386, 29832394, 43178465, 74580985, 86356930, 149161970, 164078167, 328156334, 820390835, 1640781670]

約数ペア:

[(1, 1640781670), (2, 820390835), (5, 328156334), (10, 164078167), (11, 149161970), (19, 86356930), (22, 74580985), (38, 43178465), (55, 29832394), (95, 17271386), (110, 14916197), (190, 8635693), (209, 7850630), (418, 3925315), (829, 1979230), (947, 1732610), (1045, 1570126), (1658, 989615), (1894, 866305), (2090, 785063), (4145, 395846), (4735, 346522), (8290, 197923), (9119, 179930), (9470, 173261), (10417, 157510), (15751, 104170), (17993, 91190), (18238, 89965), (20834, 78755), (31502, 52085), (35986, 45595)]