661826781

素因数分解:

$3^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:234

約数の個数: 144

約数和(自身を含む): 1306626048

約数和(自身を除く): 644799267

約数列:

[1, 3, 7, 9, 11, 21, 27, 31, 33, 49, 63, 77, 81, 93, 99, 147, 163, 189, 217, 231, 243, 279, 297, 341, 441, 489, 539, 567, 651, 693, 837, 891, 1023, 1141, 1323, 1467, 1519, 1617, 1701, 1793, 1953, 2079, 2387, 2511, 2673, 3069, 3423, 3969, 4401, 4557, 4851, 5053, 5379, 5859, 6237, 7161, 7533, 7987, 9207, 10269, 11907, 12551, 13203, 13671, 14553, 15159, 16137, 16709, 17577, 18711, 21483, 23961, 27621, 30807, 35371, 37653, 39609, 41013, 43659, 45477, 48411, 50127, 52731, 55583, 64449, 71883, 82863, 87857, 92421, 106113, 112959, 123039, 130977, 136431, 145233, 150381, 166749, 193347, 215649, 247597, 263571, 277263, 318339, 338877, 369117, 389081, 409293, 435699, 451143, 500247, 580041, 646947, 742791, 790713, 955017, 1016631, 1167243, 1227879, 1353429, 1500741, 1940841, 2228373, 2372139, 2723567, 2865051, 3049893, 3501729, 4060287, 4502223, 6685119, 7116417, 8170701, 8595153, 10505187, 13506669, 20055357, 21349251, 24512103, 31515561, 60166071, 73536309, 94546683, 220608927, 661826781]

約数ペア:

[(1, 661826781), (3, 220608927), (7, 94546683), (9, 73536309), (11, 60166071), (21, 31515561), (27, 24512103), (31, 21349251), (33, 20055357), (49, 13506669), (63, 10505187), (77, 8595153), (81, 8170701), (93, 7116417), (99, 6685119), (147, 4502223), (163, 4060287), (189, 3501729), (217, 3049893), (231, 2865051), (243, 2723567), (279, 2372139), (297, 2228373), (341, 1940841), (441, 1500741), (489, 1353429), (539, 1227879), (567, 1167243), (651, 1016631), (693, 955017), (837, 790713), (891, 742791), (1023, 646947), (1141, 580041), (1323, 500247), (1467, 451143), (1519, 435699), (1617, 409293), (1701, 389081), (1793, 369117), (1953, 338877), (2079, 318339), (2387, 277263), (2511, 263571), (2673, 247597), (3069, 215649), (3423, 193347), (3969, 166749), (4401, 150381), (4557, 145233), (4851, 136431), (5053, 130977), (5379, 123039), (5859, 112959), (6237, 106113), (7161, 92421), (7533, 87857), (7987, 82863), (9207, 71883), (10269, 64449), (11907, 55583), (12551, 52731), (13203, 50127), (13671, 48411), (14553, 45477), (15159, 43659), (16137, 41013), (16709, 39609), (17577, 37653), (18711, 35371), (21483, 30807), (23961, 27621)]