20515530

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{463}}^1$

素因数の和:691

約数の個数: 64

約数和(自身を含む): 56659968

約数和(自身を除く): 36144438

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 211, 422, 463, 633, 926, 1055, 1266, 1389, 1477, 2110, 2315, 2778, 2954, 3165, 3241, 4431, 4630, 6330, 6482, 6945, 7385, 8862, 9723, 13890, 14770, 16205, 19446, 22155, 32410, 44310, 48615, 97230, 97693, 195386, 293079, 488465, 586158, 683851, 976930, 1367702, 1465395, 2051553, 2930790, 3419255, 4103106, 6838510, 10257765, 20515530]

約数ペア:

[(1, 20515530), (2, 10257765), (3, 6838510), (5, 4103106), (6, 3419255), (7, 2930790), (10, 2051553), (14, 1465395), (15, 1367702), (21, 976930), (30, 683851), (35, 586158), (42, 488465), (70, 293079), (105, 195386), (210, 97693), (211, 97230), (422, 48615), (463, 44310), (633, 32410), (926, 22155), (1055, 19446), (1266, 16205), (1389, 14770), (1477, 13890), (2110, 9723), (2315, 8862), (2778, 7385), (2954, 6945), (3165, 6482), (3241, 6330), (4431, 4630)]