81893475

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 154752000

約数和(自身を除く): 72858525

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 59, 75, 93, 155, 177, 199, 225, 279, 295, 465, 531, 597, 775, 885, 995, 1395, 1475, 1791, 1829, 2325, 2655, 2985, 4425, 4975, 5487, 6169, 6975, 8955, 9145, 11741, 13275, 14925, 16461, 18507, 27435, 30845, 35223, 44775, 45725, 55521, 58705, 82305, 92535, 105669, 137175, 154225, 176115, 277605, 293525, 363971, 411525, 462675, 528345, 880575, 1091913, 1388025, 1819855, 2641725, 3275739, 5459565, 9099275, 16378695, 27297825, 81893475]

約数ペア:

[(1, 81893475), (3, 27297825), (5, 16378695), (9, 9099275), (15, 5459565), (25, 3275739), (31, 2641725), (45, 1819855), (59, 1388025), (75, 1091913), (93, 880575), (155, 528345), (177, 462675), (199, 411525), (225, 363971), (279, 293525), (295, 277605), (465, 176115), (531, 154225), (597, 137175), (775, 105669), (885, 92535), (995, 82305), (1395, 58705), (1475, 55521), (1791, 45725), (1829, 44775), (2325, 35223), (2655, 30845), (2985, 27435), (4425, 18507), (4975, 16461), (5487, 14925), (6169, 13275), (6975, 11741), (8955, 9145)]