256937920

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{439}}^1$

素因数の和:546

約数の個数: 112

約数和(自身を含む): 643737600

約数和(自身を除く): 386799680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 59, 62, 64, 80, 118, 124, 155, 160, 236, 248, 295, 310, 320, 439, 472, 496, 590, 620, 878, 944, 992, 1180, 1240, 1756, 1829, 1888, 1984, 2195, 2360, 2480, 3512, 3658, 3776, 4390, 4720, 4960, 7024, 7316, 8780, 9145, 9440, 9920, 13609, 14048, 14632, 17560, 18290, 18880, 25901, 27218, 28096, 29264, 35120, 36580, 51802, 54436, 58528, 68045, 70240, 73160, 103604, 108872, 117056, 129505, 136090, 140480, 146320, 207208, 217744, 259010, 272180, 292640, 414416, 435488, 518020, 544360, 585280, 802931, 828832, 870976, 1036040, 1088720, 1605862, 1657664, 2072080, 2177440, 3211724, 4014655, 4144160, 4354880, 6423448, 8029310, 8288320, 12846896, 16058620, 25693792, 32117240, 51387584, 64234480, 128468960, 256937920]

約数ペア:

[(1, 256937920), (2, 128468960), (4, 64234480), (5, 51387584), (8, 32117240), (10, 25693792), (16, 16058620), (20, 12846896), (31, 8288320), (32, 8029310), (40, 6423448), (59, 4354880), (62, 4144160), (64, 4014655), (80, 3211724), (118, 2177440), (124, 2072080), (155, 1657664), (160, 1605862), (236, 1088720), (248, 1036040), (295, 870976), (310, 828832), (320, 802931), (439, 585280), (472, 544360), (496, 518020), (590, 435488), (620, 414416), (878, 292640), (944, 272180), (992, 259010), (1180, 217744), (1240, 207208), (1756, 146320), (1829, 140480), (1888, 136090), (1984, 129505), (2195, 117056), (2360, 108872), (2480, 103604), (3512, 73160), (3658, 70240), (3776, 68045), (4390, 58528), (4720, 54436), (4960, 51802), (7024, 36580), (7316, 35120), (8780, 29264), (9145, 28096), (9440, 27218), (9920, 25901), (13609, 18880), (14048, 18290), (14632, 17560)]