257320560

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{21881}}^1$

素因数の和:21911

約数の個数: 120

約数和(自身を含む): 927971856

約数和(自身を除く): 670651296

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1960, 2352, 2940, 3920, 5880, 11760, 21881, 43762, 65643, 87524, 109405, 131286, 153167, 175048, 218810, 262572, 306334, 328215, 350096, 437620, 459501, 525144, 612668, 656430, 765835, 875240, 919002, 1050288, 1072169, 1225336, 1312860, 1531670, 1750480, 1838004, 2144338, 2297505, 2450672, 2625720, 3063340, 3216507, 3676008, 4288676, 4595010, 5251440, 5360845, 6126680, 6433014, 7352016, 8577352, 9190020, 10721690, 12253360, 12866028, 16082535, 17154704, 18380040, 21443380, 25732056, 32165070, 36760080, 42886760, 51464112, 64330140, 85773520, 128660280, 257320560]

約数ペア:

[(1, 257320560), (2, 128660280), (3, 85773520), (4, 64330140), (5, 51464112), (6, 42886760), (7, 36760080), (8, 32165070), (10, 25732056), (12, 21443380), (14, 18380040), (15, 17154704), (16, 16082535), (20, 12866028), (21, 12253360), (24, 10721690), (28, 9190020), (30, 8577352), (35, 7352016), (40, 6433014), (42, 6126680), (48, 5360845), (49, 5251440), (56, 4595010), (60, 4288676), (70, 3676008), (80, 3216507), (84, 3063340), (98, 2625720), (105, 2450672), (112, 2297505), (120, 2144338), (140, 1838004), (147, 1750480), (168, 1531670), (196, 1312860), (210, 1225336), (240, 1072169), (245, 1050288), (280, 919002), (294, 875240), (336, 765835), (392, 656430), (420, 612668), (490, 525144), (560, 459501), (588, 437620), (735, 350096), (784, 328215), (840, 306334), (980, 262572), (1176, 218810), (1470, 175048), (1680, 153167), (1960, 131286), (2352, 109405), (2940, 87524), (3920, 65643), (5880, 43762), (11760, 21881)]