21122775

素因数分解:

$3^6\times 5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:108

約数の個数: 84

約数和(自身を含む): 42014920

約数和(自身を除く): 20892145

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 61, 75, 81, 95, 135, 171, 183, 225, 243, 285, 305, 405, 475, 513, 549, 675, 729, 855, 915, 1159, 1215, 1425, 1525, 1539, 1647, 2025, 2565, 2745, 3477, 3645, 4275, 4575, 4617, 4941, 5795, 6075, 7695, 8235, 10431, 12825, 13725, 13851, 14823, 17385, 18225, 23085, 24705, 28975, 31293, 38475, 41175, 44469, 52155, 69255, 74115, 86925, 93879, 115425, 123525, 156465, 222345, 260775, 281637, 346275, 370575, 469395, 782325, 844911, 1111725, 1408185, 2346975, 4224555, 7040925, 21122775]

約数ペア:

[(1, 21122775), (3, 7040925), (5, 4224555), (9, 2346975), (15, 1408185), (19, 1111725), (25, 844911), (27, 782325), (45, 469395), (57, 370575), (61, 346275), (75, 281637), (81, 260775), (95, 222345), (135, 156465), (171, 123525), (183, 115425), (225, 93879), (243, 86925), (285, 74115), (305, 69255), (405, 52155), (475, 44469), (513, 41175), (549, 38475), (675, 31293), (729, 28975), (855, 24705), (915, 23085), (1159, 18225), (1215, 17385), (1425, 14823), (1525, 13851), (1539, 13725), (1647, 12825), (2025, 10431), (2565, 8235), (2745, 7695), (3477, 6075), (3645, 5795), (4275, 4941), (4575, 4617)]