20724702975

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^2\times {\mathrm{67}}^2\times {\mathrm{71}}^1$

素因数の和:255

約数の個数: 162

約数和(自身を含む): 40593354984

約数和(自身を除く): 19868652009

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 67, 71, 75, 85, 153, 201, 213, 225, 255, 289, 335, 355, 425, 603, 639, 765, 867, 1005, 1065, 1139, 1207, 1275, 1445, 1675, 1775, 2601, 3015, 3195, 3417, 3621, 3825, 4335, 4489, 4757, 5025, 5325, 5695, 6035, 7225, 10251, 10863, 13005, 13467, 14271, 15075, 15975, 17085, 18105, 19363, 20519, 21675, 22445, 23785, 28475, 30175, 40401, 42813, 51255, 54315, 58089, 61557, 65025, 67335, 71355, 76313, 80869, 85425, 90525, 96815, 102595, 112225, 118925, 174267, 184671, 202005, 214065, 228939, 242607, 256275, 271575, 290445, 307785, 318719, 336675, 356775, 381565, 404345, 484075, 512975, 686817, 727821, 871335, 923355, 956157, 1010025, 1070325, 1144695, 1213035, 1297321, 1374773, 1452225, 1538925, 1593595, 1907825, 2021725, 2868471, 3434085, 3639105, 3891963, 4124319, 4356675, 4616775, 4780785, 5418223, 5723475, 6065175, 6486605, 6873865, 7967975, 11675889, 12372957, 14342355, 16254669, 17170425, 18195525, 19459815, 20621595, 23903925, 27091115, 32433025, 34369325, 48764007, 58379445, 61864785, 71711775, 81273345, 92109791, 97299075, 103107975, 135455575, 243820035, 276329373, 291897225, 309323925, 406366725, 460548955, 828988119, 1219100175, 1381646865, 2302744775, 4144940595, 6908234325, 20724702975]

約数ペア:

[(1, 20724702975), (3, 6908234325), (5, 4144940595), (9, 2302744775), (15, 1381646865), (17, 1219100175), (25, 828988119), (45, 460548955), (51, 406366725), (67, 309323925), (71, 291897225), (75, 276329373), (85, 243820035), (153, 135455575), (201, 103107975), (213, 97299075), (225, 92109791), (255, 81273345), (289, 71711775), (335, 61864785), (355, 58379445), (425, 48764007), (603, 34369325), (639, 32433025), (765, 27091115), (867, 23903925), (1005, 20621595), (1065, 19459815), (1139, 18195525), (1207, 17170425), (1275, 16254669), (1445, 14342355), (1675, 12372957), (1775, 11675889), (2601, 7967975), (3015, 6873865), (3195, 6486605), (3417, 6065175), (3621, 5723475), (3825, 5418223), (4335, 4780785), (4489, 4616775), (4757, 4356675), (5025, 4124319), (5325, 3891963), (5695, 3639105), (6035, 3434085), (7225, 2868471), (10251, 2021725), (10863, 1907825), (13005, 1593595), (13467, 1538925), (14271, 1452225), (15075, 1374773), (15975, 1297321), (17085, 1213035), (18105, 1144695), (19363, 1070325), (20519, 1010025), (21675, 956157), (22445, 923355), (23785, 871335), (28475, 727821), (30175, 686817), (40401, 512975), (42813, 484075), (51255, 404345), (54315, 381565), (58089, 356775), (61557, 336675), (65025, 318719), (67335, 307785), (71355, 290445), (76313, 271575), (80869, 256275), (85425, 242607), (90525, 228939), (96815, 214065), (102595, 202005), (112225, 184671), (118925, 174267)]