21013278

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1289}}^1$

素因数の和:1337

約数の個数: 64

約数和(自身を含む): 52012800

約数和(自身を除く): 30999522

約数列:

[1, 2, 3, 6, 11, 13, 19, 22, 26, 33, 38, 39, 57, 66, 78, 114, 143, 209, 247, 286, 418, 429, 494, 627, 741, 858, 1254, 1289, 1482, 2578, 2717, 3867, 5434, 7734, 8151, 14179, 16302, 16757, 24491, 28358, 33514, 42537, 48982, 50271, 73473, 85074, 100542, 146946, 184327, 269401, 318383, 368654, 538802, 552981, 636766, 808203, 955149, 1105962, 1616406, 1910298, 3502213, 7004426, 10506639, 21013278]

約数ペア:

[(1, 21013278), (2, 10506639), (3, 7004426), (6, 3502213), (11, 1910298), (13, 1616406), (19, 1105962), (22, 955149), (26, 808203), (33, 636766), (38, 552981), (39, 538802), (57, 368654), (66, 318383), (78, 269401), (114, 184327), (143, 146946), (209, 100542), (247, 85074), (286, 73473), (418, 50271), (429, 48982), (494, 42537), (627, 33514), (741, 28358), (858, 24491), (1254, 16757), (1289, 16302), (1482, 14179), (2578, 8151), (2717, 7734), (3867, 5434)]