639792010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{541}}^1\times {\mathrm{827}}^1$

素因数の和:1399

約数の個数: 64

約数和(自身を含む): 1357098624

約数和(自身を除く): 717306614

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 541, 715, 827, 1082, 1430, 1654, 2705, 4135, 5410, 5951, 7033, 8270, 9097, 10751, 11902, 14066, 18194, 21502, 29755, 35165, 45485, 53755, 59510, 70330, 77363, 90970, 107510, 118261, 154726, 236522, 386815, 447407, 591305, 773630, 894814, 1182610, 2237035, 4474070, 4921477, 5816291, 9842954, 11632582, 24607385, 29081455, 49214770, 58162910, 63979201, 127958402, 319896005, 639792010]

約数ペア:

[(1, 639792010), (2, 319896005), (5, 127958402), (10, 63979201), (11, 58162910), (13, 49214770), (22, 29081455), (26, 24607385), (55, 11632582), (65, 9842954), (110, 5816291), (130, 4921477), (143, 4474070), (286, 2237035), (541, 1182610), (715, 894814), (827, 773630), (1082, 591305), (1430, 447407), (1654, 386815), (2705, 236522), (4135, 154726), (5410, 118261), (5951, 107510), (7033, 90970), (8270, 77363), (9097, 70330), (10751, 59510), (11902, 53755), (14066, 45485), (18194, 35165), (21502, 29755)]