218955555

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{457}}^1$

素因数の和:507

約数の個数: 120

約数和(自身を含む): 486791712

約数和(自身を除く): 267836157

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 81, 91, 105, 117, 135, 169, 189, 195, 273, 315, 351, 405, 455, 457, 507, 567, 585, 819, 845, 945, 1053, 1183, 1365, 1371, 1521, 1755, 2285, 2457, 2535, 2835, 3199, 3549, 4095, 4113, 4563, 5265, 5915, 5941, 6855, 7371, 7605, 9597, 10647, 12285, 12339, 13689, 15995, 17745, 17823, 20565, 22815, 28791, 29705, 31941, 36855, 37017, 41587, 47985, 53235, 53469, 61695, 68445, 77233, 86373, 89115, 95823, 124761, 143955, 159705, 160407, 185085, 207935, 231699, 259119, 267345, 374283, 386165, 431865, 479115, 481221, 540631, 623805, 695097, 802035, 1122849, 1158495, 1295595, 1621893, 1871415, 2085291, 2406105, 2703155, 3368547, 3475485, 4865679, 5614245, 6255873, 8109465, 10426455, 14597037, 16842735, 24328395, 31279365, 43791111, 72985185, 218955555]

約数ペア:

[(1, 218955555), (3, 72985185), (5, 43791111), (7, 31279365), (9, 24328395), (13, 16842735), (15, 14597037), (21, 10426455), (27, 8109465), (35, 6255873), (39, 5614245), (45, 4865679), (63, 3475485), (65, 3368547), (81, 2703155), (91, 2406105), (105, 2085291), (117, 1871415), (135, 1621893), (169, 1295595), (189, 1158495), (195, 1122849), (273, 802035), (315, 695097), (351, 623805), (405, 540631), (455, 481221), (457, 479115), (507, 431865), (567, 386165), (585, 374283), (819, 267345), (845, 259119), (945, 231699), (1053, 207935), (1183, 185085), (1365, 160407), (1371, 159705), (1521, 143955), (1755, 124761), (2285, 95823), (2457, 89115), (2535, 86373), (2835, 77233), (3199, 68445), (3549, 61695), (4095, 53469), (4113, 53235), (4563, 47985), (5265, 41587), (5915, 37017), (5941, 36855), (6855, 31941), (7371, 29705), (7605, 28791), (9597, 22815), (10647, 20565), (12285, 17823), (12339, 17745), (13689, 15995)]