28746575

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:105

約数の個数: 72

約数和(自身を含む): 45715824

約数和(自身を除く): 16969249

約数列:

[1, 5, 11, 13, 17, 25, 43, 55, 65, 85, 121, 143, 187, 215, 221, 275, 325, 425, 473, 559, 605, 715, 731, 935, 1075, 1105, 1573, 2057, 2365, 2431, 2795, 3025, 3575, 3655, 4675, 5203, 5525, 6149, 7865, 8041, 9503, 10285, 11825, 12155, 13975, 18275, 26015, 26741, 30745, 39325, 40205, 47515, 51425, 60775, 67639, 88451, 104533, 130075, 133705, 153725, 201025, 237575, 338195, 442255, 522665, 668525, 1149863, 1690975, 2211275, 2613325, 5749315, 28746575]

約数ペア:

[(1, 28746575), (5, 5749315), (11, 2613325), (13, 2211275), (17, 1690975), (25, 1149863), (43, 668525), (55, 522665), (65, 442255), (85, 338195), (121, 237575), (143, 201025), (187, 153725), (215, 133705), (221, 130075), (275, 104533), (325, 88451), (425, 67639), (473, 60775), (559, 51425), (605, 47515), (715, 40205), (731, 39325), (935, 30745), (1075, 26741), (1105, 26015), (1573, 18275), (2057, 13975), (2365, 12155), (2431, 11825), (2795, 10285), (3025, 9503), (3575, 8041), (3655, 7865), (4675, 6149), (5203, 5525)]