21001065878

素因数分解:

$2^1\times {\mathrm{13}}^3\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{2909}}^1$

素因数の和:3034

約数の個数: 64

約数和(自身を含む): 35903347200

約数和(自身を除く): 14902281322

約数列:

[1, 2, 13, 26, 31, 53, 62, 106, 169, 338, 403, 689, 806, 1378, 1643, 2197, 2909, 3286, 4394, 5239, 5818, 8957, 10478, 17914, 21359, 37817, 42718, 68107, 75634, 90179, 116441, 136214, 154177, 180358, 232882, 277667, 308354, 491621, 555334, 983242, 1172327, 2004301, 2344654, 3609671, 4008602, 4779487, 6391073, 7219342, 9558974, 12782146, 15240251, 26055913, 30480502, 52111826, 62133331, 124266662, 198123263, 338726869, 396246526, 677453738, 807733303, 1615466606, 10500532939, 21001065878]

約数ペア:

[(1, 21001065878), (2, 10500532939), (13, 1615466606), (26, 807733303), (31, 677453738), (53, 396246526), (62, 338726869), (106, 198123263), (169, 124266662), (338, 62133331), (403, 52111826), (689, 30480502), (806, 26055913), (1378, 15240251), (1643, 12782146), (2197, 9558974), (2909, 7219342), (3286, 6391073), (4394, 4779487), (5239, 4008602), (5818, 3609671), (8957, 2344654), (10478, 2004301), (17914, 1172327), (21359, 983242), (37817, 555334), (42718, 491621), (68107, 308354), (75634, 277667), (90179, 232882), (116441, 180358), (136214, 154177)]