20128731520

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{44111}}^1$

素因数の和:44184

約数の個数: 128

約数和(自身を含む): 51833364480

約数和(自身を除く): 31704632960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 64, 80, 92, 115, 124, 128, 155, 160, 184, 230, 248, 310, 320, 368, 460, 496, 620, 640, 713, 736, 920, 992, 1240, 1426, 1472, 1840, 1984, 2480, 2852, 2944, 3565, 3680, 3968, 4960, 5704, 7130, 7360, 9920, 11408, 14260, 14720, 19840, 22816, 28520, 44111, 45632, 57040, 88222, 91264, 114080, 176444, 220555, 228160, 352888, 441110, 456320, 705776, 882220, 1014553, 1367441, 1411552, 1764440, 2029106, 2734882, 2823104, 3528880, 4058212, 5072765, 5469764, 5646208, 6837205, 7057760, 8116424, 10145530, 10939528, 13674410, 14115520, 16232848, 20291060, 21879056, 27348820, 28231040, 31451143, 32465696, 40582120, 43758112, 54697640, 62902286, 64931392, 81164240, 87516224, 109395280, 125804572, 129862784, 157255715, 162328480, 175032448, 218790560, 251609144, 314511430, 324656960, 437581120, 503218288, 629022860, 649313920, 875162240, 1006436576, 1258045720, 2012873152, 2516091440, 4025746304, 5032182880, 10064365760, 20128731520]

約数ペア:

[(1, 20128731520), (2, 10064365760), (4, 5032182880), (5, 4025746304), (8, 2516091440), (10, 2012873152), (16, 1258045720), (20, 1006436576), (23, 875162240), (31, 649313920), (32, 629022860), (40, 503218288), (46, 437581120), (62, 324656960), (64, 314511430), (80, 251609144), (92, 218790560), (115, 175032448), (124, 162328480), (128, 157255715), (155, 129862784), (160, 125804572), (184, 109395280), (230, 87516224), (248, 81164240), (310, 64931392), (320, 62902286), (368, 54697640), (460, 43758112), (496, 40582120), (620, 32465696), (640, 31451143), (713, 28231040), (736, 27348820), (920, 21879056), (992, 20291060), (1240, 16232848), (1426, 14115520), (1472, 13674410), (1840, 10939528), (1984, 10145530), (2480, 8116424), (2852, 7057760), (2944, 6837205), (3565, 5646208), (3680, 5469764), (3968, 5072765), (4960, 4058212), (5704, 3528880), (7130, 2823104), (7360, 2734882), (9920, 2029106), (11408, 1764440), (14260, 1411552), (14720, 1367441), (19840, 1014553), (22816, 882220), (28520, 705776), (44111, 456320), (45632, 441110), (57040, 352888), (88222, 228160), (91264, 220555), (114080, 176444)]