20605780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1933}}^1$

素因数の和:1996

約数の個数: 48

約数和(自身を含む): 47762064

約数和(自身を除く): 27156284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 1933, 2132, 2665, 3866, 5330, 7732, 9665, 10660, 19330, 25129, 38660, 50258, 79253, 100516, 125645, 158506, 251290, 317012, 396265, 502580, 792530, 1030289, 1585060, 2060578, 4121156, 5151445, 10302890, 20605780]

約数ペア:

[(1, 20605780), (2, 10302890), (4, 5151445), (5, 4121156), (10, 2060578), (13, 1585060), (20, 1030289), (26, 792530), (41, 502580), (52, 396265), (65, 317012), (82, 251290), (130, 158506), (164, 125645), (205, 100516), (260, 79253), (410, 50258), (533, 38660), (820, 25129), (1066, 19330), (1933, 10660), (2132, 9665), (2665, 7732), (3866, 5330)]