20013910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:469

約数の個数: 64

約数和(自身を含む): 44457984

約数和(自身を除く): 24444074

約数列:

[1, 2, 5, 7, 10, 14, 23, 31, 35, 46, 62, 70, 115, 155, 161, 217, 230, 310, 322, 401, 434, 713, 802, 805, 1085, 1426, 1610, 2005, 2170, 2807, 3565, 4010, 4991, 5614, 7130, 9223, 9982, 12431, 14035, 18446, 24862, 24955, 28070, 46115, 49910, 62155, 64561, 87017, 92230, 124310, 129122, 174034, 285913, 322805, 435085, 571826, 645610, 870170, 1429565, 2001391, 2859130, 4002782, 10006955, 20013910]

約数ペア:

[(1, 20013910), (2, 10006955), (5, 4002782), (7, 2859130), (10, 2001391), (14, 1429565), (23, 870170), (31, 645610), (35, 571826), (46, 435085), (62, 322805), (70, 285913), (115, 174034), (155, 129122), (161, 124310), (217, 92230), (230, 87017), (310, 64561), (322, 62155), (401, 49910), (434, 46115), (713, 28070), (802, 24955), (805, 24862), (1085, 18446), (1426, 14035), (1610, 12431), (2005, 9982), (2170, 9223), (2807, 7130), (3565, 5614), (4010, 4991)]