256759160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:238

約数の個数: 192

約数和(自身を含む): 742694400

約数和(自身を除く): 485935240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 19, 20, 28, 34, 35, 38, 40, 56, 68, 70, 76, 85, 95, 119, 133, 136, 140, 152, 167, 170, 190, 238, 266, 280, 289, 323, 334, 340, 380, 476, 532, 578, 595, 646, 665, 668, 680, 760, 835, 952, 1064, 1156, 1169, 1190, 1292, 1330, 1336, 1445, 1615, 1670, 2023, 2261, 2312, 2338, 2380, 2584, 2660, 2839, 2890, 3173, 3230, 3340, 4046, 4522, 4676, 4760, 5320, 5491, 5678, 5780, 5845, 6346, 6460, 6680, 8092, 9044, 9352, 10115, 10982, 11305, 11356, 11560, 11690, 12692, 12920, 14195, 15865, 16184, 18088, 19873, 20230, 21964, 22211, 22610, 22712, 23380, 25384, 27455, 28390, 31730, 38437, 39746, 40460, 43928, 44422, 45220, 46760, 48263, 53941, 54910, 56780, 63460, 76874, 79492, 80920, 88844, 90440, 96526, 99365, 107882, 109820, 111055, 113560, 126920, 153748, 158984, 177688, 192185, 193052, 198730, 215764, 219640, 222110, 241315, 269705, 307496, 337841, 377587, 384370, 386104, 397460, 431528, 444220, 482630, 539410, 675682, 755174, 768740, 794920, 888440, 916997, 965260, 1078820, 1351364, 1510348, 1537480, 1689205, 1833994, 1887935, 1930520, 2157640, 2702728, 3020696, 3378410, 3667988, 3775870, 4584985, 6418979, 6756820, 7335976, 7551740, 9169970, 12837958, 13513640, 15103480, 18339940, 25675916, 32094895, 36679880, 51351832, 64189790, 128379580, 256759160]

約数ペア:

[(1, 256759160), (2, 128379580), (4, 64189790), (5, 51351832), (7, 36679880), (8, 32094895), (10, 25675916), (14, 18339940), (17, 15103480), (19, 13513640), (20, 12837958), (28, 9169970), (34, 7551740), (35, 7335976), (38, 6756820), (40, 6418979), (56, 4584985), (68, 3775870), (70, 3667988), (76, 3378410), (85, 3020696), (95, 2702728), (119, 2157640), (133, 1930520), (136, 1887935), (140, 1833994), (152, 1689205), (167, 1537480), (170, 1510348), (190, 1351364), (238, 1078820), (266, 965260), (280, 916997), (289, 888440), (323, 794920), (334, 768740), (340, 755174), (380, 675682), (476, 539410), (532, 482630), (578, 444220), (595, 431528), (646, 397460), (665, 386104), (668, 384370), (680, 377587), (760, 337841), (835, 307496), (952, 269705), (1064, 241315), (1156, 222110), (1169, 219640), (1190, 215764), (1292, 198730), (1330, 193052), (1336, 192185), (1445, 177688), (1615, 158984), (1670, 153748), (2023, 126920), (2261, 113560), (2312, 111055), (2338, 109820), (2380, 107882), (2584, 99365), (2660, 96526), (2839, 90440), (2890, 88844), (3173, 80920), (3230, 79492), (3340, 76874), (4046, 63460), (4522, 56780), (4676, 54910), (4760, 53941), (5320, 48263), (5491, 46760), (5678, 45220), (5780, 44422), (5845, 43928), (6346, 40460), (6460, 39746), (6680, 38437), (8092, 31730), (9044, 28390), (9352, 27455), (10115, 25384), (10982, 23380), (11305, 22712), (11356, 22610), (11560, 22211), (11690, 21964), (12692, 20230), (12920, 19873), (14195, 18088), (15865, 16184)]