21000455476

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{749267}}^1$

素因数の和:749309

約数の個数: 72

約数和(自身を含む): 50224932576

約数和(自身を除く): 29224477100

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 49, 52, 77, 91, 98, 143, 154, 182, 196, 286, 308, 364, 539, 572, 637, 1001, 1078, 1274, 2002, 2156, 2548, 4004, 7007, 14014, 28028, 749267, 1498534, 2997068, 5244869, 8241937, 9740471, 10489738, 16483874, 19480942, 20979476, 32967748, 36714083, 38961884, 57693559, 68183297, 73428166, 107145181, 115387118, 136366594, 146856332, 214290362, 230774236, 272733188, 403854913, 428580724, 477283079, 750016267, 807709826, 954566158, 1500032534, 1615419652, 1909132316, 3000065068, 5250113869, 10500227738, 21000455476]

約数ペア:

[(1, 21000455476), (2, 10500227738), (4, 5250113869), (7, 3000065068), (11, 1909132316), (13, 1615419652), (14, 1500032534), (22, 954566158), (26, 807709826), (28, 750016267), (44, 477283079), (49, 428580724), (52, 403854913), (77, 272733188), (91, 230774236), (98, 214290362), (143, 146856332), (154, 136366594), (182, 115387118), (196, 107145181), (286, 73428166), (308, 68183297), (364, 57693559), (539, 38961884), (572, 36714083), (637, 32967748), (1001, 20979476), (1078, 19480942), (1274, 16483874), (2002, 10489738), (2156, 9740471), (2548, 8241937), (4004, 5244869), (7007, 2997068), (14014, 1498534), (28028, 749267)]