21891650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{751}}^1$

素因数の和:827

約数の個数: 48

約数和(自身を含む): 45318528

約数和(自身を除く): 23426878

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 53, 55, 106, 110, 265, 275, 530, 550, 583, 751, 1166, 1325, 1502, 2650, 2915, 3755, 5830, 7510, 8261, 14575, 16522, 18775, 29150, 37550, 39803, 41305, 79606, 82610, 199015, 206525, 398030, 413050, 437833, 875666, 995075, 1990150, 2189165, 4378330, 10945825, 21891650]

約数ペア:

[(1, 21891650), (2, 10945825), (5, 4378330), (10, 2189165), (11, 1990150), (22, 995075), (25, 875666), (50, 437833), (53, 413050), (55, 398030), (106, 206525), (110, 199015), (265, 82610), (275, 79606), (530, 41305), (550, 39803), (583, 37550), (751, 29150), (1166, 18775), (1325, 16522), (1502, 14575), (2650, 8261), (2915, 7510), (3755, 5830)]