1639621880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{31219}}^1$

素因数の和:31344

約数の個数: 64

約数和(自身を含む): 4012394400

約数和(自身を除く): 2372772520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 101, 104, 130, 202, 260, 404, 505, 520, 808, 1010, 1313, 2020, 2626, 4040, 5252, 6565, 10504, 13130, 26260, 31219, 52520, 62438, 124876, 156095, 249752, 312190, 405847, 624380, 811694, 1248760, 1623388, 2029235, 3153119, 3246776, 4058470, 6306238, 8116940, 12612476, 15765595, 16233880, 25224952, 31531190, 40990547, 63062380, 81981094, 126124760, 163962188, 204952735, 327924376, 409905470, 819810940, 1639621880]

約数ペア:

[(1, 1639621880), (2, 819810940), (4, 409905470), (5, 327924376), (8, 204952735), (10, 163962188), (13, 126124760), (20, 81981094), (26, 63062380), (40, 40990547), (52, 31531190), (65, 25224952), (101, 16233880), (104, 15765595), (130, 12612476), (202, 8116940), (260, 6306238), (404, 4058470), (505, 3246776), (520, 3153119), (808, 2029235), (1010, 1623388), (1313, 1248760), (2020, 811694), (2626, 624380), (4040, 405847), (5252, 312190), (6565, 249752), (10504, 156095), (13130, 124876), (26260, 62438), (31219, 52520)]