20406900087

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1\times {\mathrm{42943}}^1$

素因数の和:43372

約数の個数: 48

約数和(自身を含む): 35550760960

約数和(自身を除く): 15143860873

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 397, 399, 1191, 1197, 2779, 3573, 7543, 8337, 22629, 25011, 42943, 52801, 67887, 128829, 158403, 300601, 386487, 475209, 815917, 901803, 2447751, 2705409, 5711419, 7343253, 17048371, 17134257, 51145113, 51402771, 119338597, 153435339, 323919049, 358015791, 971757147, 1074047373, 2267433343, 2915271441, 6802300029, 20406900087]

約数ペア:

[(1, 20406900087), (3, 6802300029), (7, 2915271441), (9, 2267433343), (19, 1074047373), (21, 971757147), (57, 358015791), (63, 323919049), (133, 153435339), (171, 119338597), (397, 51402771), (399, 51145113), (1191, 17134257), (1197, 17048371), (2779, 7343253), (3573, 5711419), (7543, 2705409), (8337, 2447751), (22629, 901803), (25011, 815917), (42943, 475209), (52801, 386487), (67887, 300601), (128829, 158403)]