1287437440

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64891}}^1$

素因数の和:64941

約数の個数: 64

約数和(自身を含む): 3177112320

約数和(自身を除く): 1889674880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 19840, 64891, 129782, 259564, 324455, 519128, 648910, 1038256, 1297820, 2011621, 2076512, 2595640, 4023242, 4153024, 5191280, 8046484, 8306048, 10058105, 10382560, 16092968, 20116210, 20765120, 32185936, 40232420, 41530240, 64371872, 80464840, 128743744, 160929680, 257487488, 321859360, 643718720, 1287437440]

約数ペア:

[(1, 1287437440), (2, 643718720), (4, 321859360), (5, 257487488), (8, 160929680), (10, 128743744), (16, 80464840), (20, 64371872), (31, 41530240), (32, 40232420), (40, 32185936), (62, 20765120), (64, 20116210), (80, 16092968), (124, 10382560), (128, 10058105), (155, 8306048), (160, 8046484), (248, 5191280), (310, 4153024), (320, 4023242), (496, 2595640), (620, 2076512), (640, 2011621), (992, 1297820), (1240, 1038256), (1984, 648910), (2480, 519128), (3968, 324455), (4960, 259564), (9920, 129782), (19840, 64891)]