204907520

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1291}}^1$

素因数の和:1347

約数の個数: 88

約数和(自身を含む): 507787008

約数和(自身を除く): 302879488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1024, 1240, 1280, 1291, 1984, 2480, 2560, 2582, 3968, 4960, 5120, 5164, 6455, 7936, 9920, 10328, 12910, 15872, 19840, 20656, 25820, 31744, 39680, 40021, 41312, 51640, 79360, 80042, 82624, 103280, 158720, 160084, 165248, 200105, 206560, 320168, 330496, 400210, 413120, 640336, 660992, 800420, 826240, 1280672, 1321984, 1600840, 1652480, 2561344, 3201680, 3304960, 5122688, 6403360, 6609920, 10245376, 12806720, 20490752, 25613440, 40981504, 51226880, 102453760, 204907520]

約数ペア:

[(1, 204907520), (2, 102453760), (4, 51226880), (5, 40981504), (8, 25613440), (10, 20490752), (16, 12806720), (20, 10245376), (31, 6609920), (32, 6403360), (40, 5122688), (62, 3304960), (64, 3201680), (80, 2561344), (124, 1652480), (128, 1600840), (155, 1321984), (160, 1280672), (248, 826240), (256, 800420), (310, 660992), (320, 640336), (496, 413120), (512, 400210), (620, 330496), (640, 320168), (992, 206560), (1024, 200105), (1240, 165248), (1280, 160084), (1291, 158720), (1984, 103280), (2480, 82624), (2560, 80042), (2582, 79360), (3968, 51640), (4960, 41312), (5120, 40021), (5164, 39680), (6455, 31744), (7936, 25820), (9920, 20656), (10328, 19840), (12910, 15872)]