19704520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2357}}^1$

素因数の和:2398

約数の個数: 64

約数和(自身を含む): 50932800

約数和(自身を除く): 31228280

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2357, 4180, 4714, 8360, 9428, 11785, 18856, 23570, 25927, 44783, 47140, 51854, 89566, 94280, 103708, 129635, 179132, 207416, 223915, 259270, 358264, 447830, 492613, 518540, 895660, 985226, 1037080, 1791320, 1970452, 2463065, 3940904, 4926130, 9852260, 19704520]

約数ペア:

[(1, 19704520), (2, 9852260), (4, 4926130), (5, 3940904), (8, 2463065), (10, 1970452), (11, 1791320), (19, 1037080), (20, 985226), (22, 895660), (38, 518540), (40, 492613), (44, 447830), (55, 358264), (76, 259270), (88, 223915), (95, 207416), (110, 179132), (152, 129635), (190, 103708), (209, 94280), (220, 89566), (380, 51854), (418, 47140), (440, 44783), (760, 25927), (836, 23570), (1045, 18856), (1672, 11785), (2090, 9428), (2357, 8360), (4180, 4714)]