20121124880

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{277}}^1\times {\mathrm{19319}}^1$

素因数の和:19656

約数の個数: 80

約数和(自身を含む): 47951930880

約数和(自身を除く): 27830806000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 277, 376, 470, 554, 752, 940, 1108, 1385, 1880, 2216, 2770, 3760, 4432, 5540, 11080, 13019, 19319, 22160, 26038, 38638, 52076, 65095, 77276, 96595, 104152, 130190, 154552, 193190, 208304, 260380, 309104, 386380, 520760, 772760, 907993, 1041520, 1545520, 1815986, 3631972, 4539965, 5351363, 7263944, 9079930, 10702726, 14527888, 18159860, 21405452, 26756815, 36319720, 42810904, 53513630, 72639440, 85621808, 107027260, 214054520, 251514061, 428109040, 503028122, 1006056244, 1257570305, 2012112488, 2515140610, 4024224976, 5030281220, 10060562440, 20121124880]

約数ペア:

[(1, 20121124880), (2, 10060562440), (4, 5030281220), (5, 4024224976), (8, 2515140610), (10, 2012112488), (16, 1257570305), (20, 1006056244), (40, 503028122), (47, 428109040), (80, 251514061), (94, 214054520), (188, 107027260), (235, 85621808), (277, 72639440), (376, 53513630), (470, 42810904), (554, 36319720), (752, 26756815), (940, 21405452), (1108, 18159860), (1385, 14527888), (1880, 10702726), (2216, 9079930), (2770, 7263944), (3760, 5351363), (4432, 4539965), (5540, 3631972), (11080, 1815986), (13019, 1545520), (19319, 1041520), (22160, 907993), (26038, 772760), (38638, 520760), (52076, 386380), (65095, 309104), (77276, 260380), (96595, 208304), (104152, 193190), (130190, 154552)]