161891860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{211}}^1\times {\mathrm{227}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 371510496

約数和(自身を除く): 209618636

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 211, 227, 260, 338, 422, 454, 676, 844, 845, 908, 1055, 1135, 1690, 2110, 2270, 2743, 2951, 3380, 4220, 4540, 5486, 5902, 10972, 11804, 13715, 14755, 27430, 29510, 35659, 38363, 47897, 54860, 59020, 71318, 76726, 95794, 142636, 153452, 178295, 191588, 191815, 239485, 356590, 383630, 478970, 622661, 713180, 767260, 957940, 1245322, 2490644, 3113305, 6226610, 8094593, 12453220, 16189186, 32378372, 40472965, 80945930, 161891860]

約数ペア:

[(1, 161891860), (2, 80945930), (4, 40472965), (5, 32378372), (10, 16189186), (13, 12453220), (20, 8094593), (26, 6226610), (52, 3113305), (65, 2490644), (130, 1245322), (169, 957940), (211, 767260), (227, 713180), (260, 622661), (338, 478970), (422, 383630), (454, 356590), (676, 239485), (844, 191815), (845, 191588), (908, 178295), (1055, 153452), (1135, 142636), (1690, 95794), (2110, 76726), (2270, 71318), (2743, 59020), (2951, 54860), (3380, 47897), (4220, 38363), (4540, 35659), (5486, 29510), (5902, 27430), (10972, 14755), (11804, 13715)]