28867748975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^2\times {\mathrm{421}}^1$

素因数の和:625

約数の個数: 72

約数和(自身を含む): 40061060928

約数和(自身を除く): 11193311953

約数列:

[1, 5, 13, 25, 47, 65, 67, 235, 325, 335, 421, 611, 871, 1175, 1675, 2105, 3055, 3149, 4355, 4489, 5473, 10525, 15275, 15745, 19787, 21775, 22445, 27365, 28207, 40937, 58357, 78725, 98935, 112225, 136825, 141035, 204685, 210983, 257231, 291785, 366691, 494675, 705175, 1023425, 1054915, 1286155, 1325729, 1458925, 1833455, 1889869, 2742779, 5274575, 6430775, 6628645, 9167275, 9449345, 13713895, 17234477, 24568297, 33143225, 47246725, 68569475, 86172385, 88823843, 122841485, 430861925, 444119215, 614207425, 1154709959, 2220596075, 5773549795, 28867748975]

約数ペア:

[(1, 28867748975), (5, 5773549795), (13, 2220596075), (25, 1154709959), (47, 614207425), (65, 444119215), (67, 430861925), (235, 122841485), (325, 88823843), (335, 86172385), (421, 68569475), (611, 47246725), (871, 33143225), (1175, 24568297), (1675, 17234477), (2105, 13713895), (3055, 9449345), (3149, 9167275), (4355, 6628645), (4489, 6430775), (5473, 5274575), (10525, 2742779), (15275, 1889869), (15745, 1833455), (19787, 1458925), (21775, 1325729), (22445, 1286155), (27365, 1054915), (28207, 1023425), (40937, 705175), (58357, 494675), (78725, 366691), (98935, 291785), (112225, 257231), (136825, 210983), (141035, 204685)]