217959960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{503}}^1$

素因数の和:697

約数の個数: 128

約数和(自身を含む): 688020480

約数和(自身を除く): 470060520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 157, 184, 230, 276, 314, 345, 460, 471, 503, 552, 628, 690, 785, 920, 942, 1006, 1256, 1380, 1509, 1570, 1884, 2012, 2355, 2515, 2760, 3018, 3140, 3611, 3768, 4024, 4710, 5030, 6036, 6280, 7222, 7545, 9420, 10060, 10833, 11569, 12072, 14444, 15090, 18055, 18840, 20120, 21666, 23138, 28888, 30180, 34707, 36110, 43332, 46276, 54165, 57845, 60360, 69414, 72220, 78971, 86664, 92552, 108330, 115690, 138828, 144440, 157942, 173535, 216660, 231380, 236913, 277656, 315884, 347070, 394855, 433320, 462760, 473826, 631768, 694140, 789710, 947652, 1184565, 1388280, 1579420, 1816333, 1895304, 2369130, 3158840, 3632666, 4738260, 5448999, 7265332, 9081665, 9476520, 10897998, 14530664, 18163330, 21795996, 27244995, 36326660, 43591992, 54489990, 72653320, 108979980, 217959960]

約数ペア:

[(1, 217959960), (2, 108979980), (3, 72653320), (4, 54489990), (5, 43591992), (6, 36326660), (8, 27244995), (10, 21795996), (12, 18163330), (15, 14530664), (20, 10897998), (23, 9476520), (24, 9081665), (30, 7265332), (40, 5448999), (46, 4738260), (60, 3632666), (69, 3158840), (92, 2369130), (115, 1895304), (120, 1816333), (138, 1579420), (157, 1388280), (184, 1184565), (230, 947652), (276, 789710), (314, 694140), (345, 631768), (460, 473826), (471, 462760), (503, 433320), (552, 394855), (628, 347070), (690, 315884), (785, 277656), (920, 236913), (942, 231380), (1006, 216660), (1256, 173535), (1380, 157942), (1509, 144440), (1570, 138828), (1884, 115690), (2012, 108330), (2355, 92552), (2515, 86664), (2760, 78971), (3018, 72220), (3140, 69414), (3611, 60360), (3768, 57845), (4024, 54165), (4710, 46276), (5030, 43332), (6036, 36110), (6280, 34707), (7222, 30180), (7545, 28888), (9420, 23138), (10060, 21666), (10833, 20120), (11569, 18840), (12072, 18055), (14444, 15090)]