28935725

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 47496960

約数和(自身を除く): 18561235

約数列:

[1, 5, 7, 13, 23, 25, 35, 49, 65, 79, 91, 115, 161, 175, 245, 299, 325, 395, 455, 553, 575, 637, 805, 1027, 1127, 1225, 1495, 1817, 1975, 2093, 2275, 2765, 3185, 3871, 4025, 5135, 5635, 7189, 7475, 9085, 10465, 12719, 13825, 14651, 15925, 19355, 23621, 25675, 28175, 35945, 45425, 50323, 52325, 63595, 73255, 89033, 96775, 118105, 165347, 179725, 251615, 317975, 366275, 445165, 590525, 826735, 1157429, 1258075, 2225825, 4133675, 5787145, 28935725]

約数ペア:

[(1, 28935725), (5, 5787145), (7, 4133675), (13, 2225825), (23, 1258075), (25, 1157429), (35, 826735), (49, 590525), (65, 445165), (79, 366275), (91, 317975), (115, 251615), (161, 179725), (175, 165347), (245, 118105), (299, 96775), (325, 89033), (395, 73255), (455, 63595), (553, 52325), (575, 50323), (637, 45425), (805, 35945), (1027, 28175), (1127, 25675), (1225, 23621), (1495, 19355), (1817, 15925), (1975, 14651), (2093, 13825), (2275, 12719), (2765, 10465), (3185, 9085), (3871, 7475), (4025, 7189), (5135, 5635)]