201821625

素因数分解:

$3^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:701

約数の個数: 80

約数和(自身を含む): 388996608

約数和(自身を除く): 187174983

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 75, 81, 93, 125, 135, 155, 225, 279, 375, 405, 465, 643, 675, 775, 837, 1125, 1395, 1929, 2025, 2325, 2511, 3215, 3375, 3875, 4185, 5787, 6975, 9645, 10125, 11625, 12555, 16075, 17361, 19933, 20925, 28935, 34875, 48225, 52083, 59799, 62775, 80375, 86805, 99665, 104625, 144675, 179397, 241125, 260415, 298995, 313875, 434025, 498325, 538191, 723375, 896985, 1302075, 1494975, 1614573, 2170125, 2491625, 2690955, 4484925, 6510375, 7474875, 8072865, 13454775, 22424625, 40364325, 67273875, 201821625]

約数ペア:

[(1, 201821625), (3, 67273875), (5, 40364325), (9, 22424625), (15, 13454775), (25, 8072865), (27, 7474875), (31, 6510375), (45, 4484925), (75, 2690955), (81, 2491625), (93, 2170125), (125, 1614573), (135, 1494975), (155, 1302075), (225, 896985), (279, 723375), (375, 538191), (405, 498325), (465, 434025), (643, 313875), (675, 298995), (775, 260415), (837, 241125), (1125, 179397), (1395, 144675), (1929, 104625), (2025, 99665), (2325, 86805), (2511, 80375), (3215, 62775), (3375, 59799), (3875, 52083), (4185, 48225), (5787, 34875), (6975, 28935), (9645, 20925), (10125, 19933), (11625, 17361), (12555, 16075)]