25878795280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{38699}}^1$

素因数の和:39368

約数の個数: 80

約数和(自身を含む): 64898971200

約数和(自身を除く): 39020175920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 643, 1040, 1286, 2572, 3215, 5144, 6430, 8359, 10288, 12860, 16718, 25720, 33436, 38699, 41795, 51440, 66872, 77398, 83590, 133744, 154796, 167180, 193495, 309592, 334360, 386990, 503087, 619184, 668720, 773980, 1006174, 1547960, 2012348, 2515435, 3095920, 4024696, 5030870, 8049392, 10061740, 20123480, 24883457, 40246960, 49766914, 99533828, 124417285, 199067656, 248834570, 323484941, 398135312, 497669140, 646969882, 995338280, 1293939764, 1617424705, 1990676560, 2587879528, 3234849410, 5175759056, 6469698820, 12939397640, 25878795280]

約数ペア:

[(1, 25878795280), (2, 12939397640), (4, 6469698820), (5, 5175759056), (8, 3234849410), (10, 2587879528), (13, 1990676560), (16, 1617424705), (20, 1293939764), (26, 995338280), (40, 646969882), (52, 497669140), (65, 398135312), (80, 323484941), (104, 248834570), (130, 199067656), (208, 124417285), (260, 99533828), (520, 49766914), (643, 40246960), (1040, 24883457), (1286, 20123480), (2572, 10061740), (3215, 8049392), (5144, 5030870), (6430, 4024696), (8359, 3095920), (10288, 2515435), (12860, 2012348), (16718, 1547960), (25720, 1006174), (33436, 773980), (38699, 668720), (41795, 619184), (51440, 503087), (66872, 386990), (77398, 334360), (83590, 309592), (133744, 193495), (154796, 167180)]