12701975

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:81

約数の個数: 72

約数和(自身を含む): 20779920

約数和(自身を除く): 8077945

約数列:

[1, 5, 11, 13, 17, 19, 25, 55, 65, 85, 95, 121, 143, 187, 209, 221, 247, 275, 323, 325, 425, 475, 605, 715, 935, 1045, 1105, 1235, 1573, 1615, 2057, 2299, 2431, 2717, 3025, 3553, 3575, 4199, 4675, 5225, 5525, 6175, 7865, 8075, 10285, 11495, 12155, 13585, 17765, 20995, 26741, 29887, 39083, 39325, 46189, 51425, 57475, 60775, 67925, 88825, 104975, 133705, 149435, 195415, 230945, 508079, 668525, 747175, 977075, 1154725, 2540395, 12701975]

約数ペア:

[(1, 12701975), (5, 2540395), (11, 1154725), (13, 977075), (17, 747175), (19, 668525), (25, 508079), (55, 230945), (65, 195415), (85, 149435), (95, 133705), (121, 104975), (143, 88825), (187, 67925), (209, 60775), (221, 57475), (247, 51425), (275, 46189), (323, 39325), (325, 39083), (425, 29887), (475, 26741), (605, 20995), (715, 17765), (935, 13585), (1045, 12155), (1105, 11495), (1235, 10285), (1573, 8075), (1615, 7865), (2057, 6175), (2299, 5525), (2431, 5225), (2717, 4675), (3025, 4199), (3553, 3575)]