21040425

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:160

約数の個数: 96

約数和(自身を含む): 45512960

約数和(自身を除く): 24472535

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 61, 63, 73, 75, 105, 135, 175, 183, 189, 219, 225, 305, 315, 365, 427, 511, 525, 549, 657, 675, 915, 945, 1095, 1281, 1525, 1533, 1575, 1647, 1825, 1971, 2135, 2555, 2745, 3285, 3843, 4453, 4575, 4599, 4725, 5475, 6405, 7665, 8235, 9855, 10675, 11529, 12775, 13359, 13725, 13797, 16425, 19215, 22265, 22995, 31171, 32025, 38325, 40077, 41175, 49275, 57645, 66795, 68985, 93513, 96075, 111325, 114975, 120231, 155855, 200385, 280539, 288225, 333975, 344925, 467565, 601155, 779275, 841617, 1001925, 1402695, 2337825, 3005775, 4208085, 7013475, 21040425]

約数ペア:

[(1, 21040425), (3, 7013475), (5, 4208085), (7, 3005775), (9, 2337825), (15, 1402695), (21, 1001925), (25, 841617), (27, 779275), (35, 601155), (45, 467565), (61, 344925), (63, 333975), (73, 288225), (75, 280539), (105, 200385), (135, 155855), (175, 120231), (183, 114975), (189, 111325), (219, 96075), (225, 93513), (305, 68985), (315, 66795), (365, 57645), (427, 49275), (511, 41175), (525, 40077), (549, 38325), (657, 32025), (675, 31171), (915, 22995), (945, 22265), (1095, 19215), (1281, 16425), (1525, 13797), (1533, 13725), (1575, 13359), (1647, 12775), (1825, 11529), (1971, 10675), (2135, 9855), (2555, 8235), (2745, 7665), (3285, 6405), (3843, 5475), (4453, 4725), (4575, 4599)]