25050025

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^2$

素因数の和:72

約数の個数: 81

約数和(自身を含む): 43007013

約数和(自身を除く): 17956988

約数列:

[1, 5, 7, 11, 13, 25, 35, 49, 55, 65, 77, 91, 121, 143, 169, 175, 245, 275, 325, 385, 455, 539, 605, 637, 715, 845, 847, 1001, 1183, 1225, 1573, 1859, 1925, 2275, 2695, 3025, 3185, 3575, 4225, 4235, 5005, 5915, 5929, 7007, 7865, 8281, 9295, 11011, 13013, 13475, 15925, 20449, 21175, 25025, 29575, 29645, 35035, 39325, 41405, 46475, 55055, 65065, 77077, 91091, 102245, 143143, 148225, 175175, 207025, 275275, 325325, 385385, 455455, 511225, 715715, 1002001, 1926925, 2277275, 3578575, 5010005, 25050025]

約数ペア:

[(1, 25050025), (5, 5010005), (7, 3578575), (11, 2277275), (13, 1926925), (25, 1002001), (35, 715715), (49, 511225), (55, 455455), (65, 385385), (77, 325325), (91, 275275), (121, 207025), (143, 175175), (169, 148225), (175, 143143), (245, 102245), (275, 91091), (325, 77077), (385, 65065), (455, 55055), (539, 46475), (605, 41405), (637, 39325), (715, 35035), (845, 29645), (847, 29575), (1001, 25025), (1183, 21175), (1225, 20449), (1573, 15925), (1859, 13475), (1925, 13013), (2275, 11011), (2695, 9295), (3025, 8281), (3185, 7865), (3575, 7007), (4225, 5929), (4235, 5915)]