20622735

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:317

約数の個数: 64

約数和(自身を含む): 42470400

約数和(自身を除く): 21847665

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 139, 157, 189, 315, 417, 471, 695, 785, 945, 973, 1099, 1251, 1413, 2085, 2355, 2919, 3297, 3753, 4239, 4865, 5495, 6255, 7065, 8757, 9891, 14595, 16485, 18765, 21195, 21823, 26271, 29673, 43785, 49455, 65469, 109115, 131355, 148365, 152761, 196407, 327345, 458283, 589221, 763805, 982035, 1374849, 2291415, 2946105, 4124547, 6874245, 20622735]

約数ペア:

[(1, 20622735), (3, 6874245), (5, 4124547), (7, 2946105), (9, 2291415), (15, 1374849), (21, 982035), (27, 763805), (35, 589221), (45, 458283), (63, 327345), (105, 196407), (135, 152761), (139, 148365), (157, 131355), (189, 109115), (315, 65469), (417, 49455), (471, 43785), (695, 29673), (785, 26271), (945, 21823), (973, 21195), (1099, 18765), (1251, 16485), (1413, 14595), (2085, 9891), (2355, 8757), (2919, 7065), (3297, 6255), (3753, 5495), (4239, 4865)]