20722878

素因数分解:

$2^1\times 3^4\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{401}}^1$

素因数の和:455

約数の個数: 80

約数和(自身を含む): 52533360

約数和(自身を除く): 31810482

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 27, 29, 33, 54, 58, 66, 81, 87, 99, 162, 174, 198, 261, 297, 319, 401, 522, 594, 638, 783, 802, 891, 957, 1203, 1566, 1782, 1914, 2349, 2406, 2871, 3609, 4411, 4698, 5742, 7218, 8613, 8822, 10827, 11629, 13233, 17226, 21654, 23258, 25839, 26466, 32481, 34887, 39699, 51678, 64962, 69774, 79398, 104661, 119097, 127919, 209322, 238194, 255838, 313983, 357291, 383757, 627966, 714582, 767514, 941949, 1151271, 1883898, 2302542, 3453813, 6907626, 10361439, 20722878]

約数ペア:

[(1, 20722878), (2, 10361439), (3, 6907626), (6, 3453813), (9, 2302542), (11, 1883898), (18, 1151271), (22, 941949), (27, 767514), (29, 714582), (33, 627966), (54, 383757), (58, 357291), (66, 313983), (81, 255838), (87, 238194), (99, 209322), (162, 127919), (174, 119097), (198, 104661), (261, 79398), (297, 69774), (319, 64962), (401, 51678), (522, 39699), (594, 34887), (638, 32481), (783, 26466), (802, 25839), (891, 23258), (957, 21654), (1203, 17226), (1566, 13233), (1782, 11629), (1914, 10827), (2349, 8822), (2406, 8613), (2871, 7218), (3609, 5742), (4411, 4698)]