20069775

素因数分解:

$3^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:103

約数の個数: 120

約数和(自身を含む): 43751664

約数和(自身を除く): 23681889

約数列:

[1, 3, 5, 9, 11, 15, 17, 25, 27, 33, 45, 51, 53, 55, 75, 81, 85, 99, 135, 153, 159, 165, 187, 225, 255, 265, 275, 297, 405, 425, 459, 477, 495, 561, 583, 675, 765, 795, 825, 891, 901, 935, 1275, 1325, 1377, 1431, 1485, 1683, 1749, 2025, 2295, 2385, 2475, 2703, 2805, 2915, 3825, 3975, 4293, 4455, 4505, 4675, 5049, 5247, 6885, 7155, 7425, 8109, 8415, 8745, 9911, 11475, 11925, 13515, 14025, 14575, 15147, 15741, 21465, 22275, 22525, 24327, 25245, 26235, 29733, 34425, 35775, 40545, 42075, 43725, 47223, 49555, 67575, 72981, 75735, 78705, 89199, 107325, 121635, 126225, 131175, 148665, 202725, 236115, 247775, 267597, 364905, 378675, 393525, 445995, 608175, 743325, 802791, 1180575, 1337985, 1824525, 2229975, 4013955, 6689925, 20069775]

約数ペア:

[(1, 20069775), (3, 6689925), (5, 4013955), (9, 2229975), (11, 1824525), (15, 1337985), (17, 1180575), (25, 802791), (27, 743325), (33, 608175), (45, 445995), (51, 393525), (53, 378675), (55, 364905), (75, 267597), (81, 247775), (85, 236115), (99, 202725), (135, 148665), (153, 131175), (159, 126225), (165, 121635), (187, 107325), (225, 89199), (255, 78705), (265, 75735), (275, 72981), (297, 67575), (405, 49555), (425, 47223), (459, 43725), (477, 42075), (495, 40545), (561, 35775), (583, 34425), (675, 29733), (765, 26235), (795, 25245), (825, 24327), (891, 22525), (901, 22275), (935, 21465), (1275, 15741), (1325, 15147), (1377, 14575), (1431, 14025), (1485, 13515), (1683, 11925), (1749, 11475), (2025, 9911), (2295, 8745), (2385, 8415), (2475, 8109), (2703, 7425), (2805, 7155), (2915, 6885), (3825, 5247), (3975, 5049), (4293, 4675), (4455, 4505)]